Top Fish Finders Compared

4 Questions to Ask When Choosing a Fish Finder

Before you head out and buy any old fish finder, we have developed these four questions for you to answer. Your answers will help you understand what type of fish finder and what features you need the most.

1. How deep do you fish?

One of the first things you should ask yourself is how deep is the water you generally fish in? The water depth plays a crucial role in the type of fish finder you should use. If you are mainly a deep water angler, then a fish finder with down imaging is best.

For shallow water fishers, you will want to look for a fish finder that uses side imaging. Likewise, if you spend your time split between deep water and shallow water, a multi-image finder should be at the top of your list. While more expensive, a fish finder with both down and side viewing will benefit you the most.

2. How far do you travel to fish?

3. How much space do you have available?

Some boat owners don't have any issue with space and can pick any type of fish finder they prefer. However, for those that fish from kayaks, canoes, float tubes, or other limited space options, your options are more limited.

Portable fish finders are ideal for boats and craft with smaller space for mounting or storage. Even if you have a larger boat, you may prefer a portable fish finder for the ease of removal and installation, should you decide to take it with you out on a different fishing vessel.

4. How will you connect the transducer to your kayak?

There are several types of traducers, and each will attach to your boat or kayak differently. You can choose an over-the-edge style transducer that clips to a pole arm and hangs directly in the water near the transom.

You also have options that connect to the hull, through the hull, or transom mounts. The type and size of your boat or vessel will determine the best mounting style and location.

1. Humminbird 410950-1NAV Helix 7

The Humminbird Helix 7 is easily the best fish finder on the market today. This 7-inch screen beast comes with everything you need to install and start finding. It also boasts several different styles, a couple of which make this list (see below).

This version, the 410950-1 NAV, includes only the Navonics+ (US and Canada configuration). This program is on an SD card and has built-in maps for over 21,000 lakes and waterways in North America. No matter where you go, you will have a map waiting for you.

The transducer is a combination imaging version, so it is best used in any water depths. However, with the advances in the CHIRP sonar, you get a crystal clear view of the water under your boat, extending out 125 feet on each side. You also get clear-view 125 feet straight down.

Schools of fish and larger single fish appear in real-time, and you can watch them move. Know exactly where to cast and when with this guy mounted on your boat. The gimbal mounting bracket is decent, but an aftermarket or 3^rd party mount may be more useful.

Humminbird has great customer service, but the 5 and 7-inch screen models only come with a 1-year warranty, starting on the date of purchase. Larger screens include the Humminbird 3-year warranty, so be aware of what you are getting here.

2. Garmin ECHOMAP UHD 93sv

Garmin is a brand known and trusted around the world. Their fish finders are among the top rated and most reviewed of any brand out there. The EchoMap UHD 93sv is the top of the range fish finder. With a 9-inch touch screen and multi-view set up, it makes finding fish almost too easy.

Once you have the fish finder, installation is fairly straightforward. Transom mounts are the most common, but hull and through-the-hull are also options. It is the initial set up, though, that can get confusing. A lot of first-time users get lost during the initial set up.

Luckily, the step by step process in the owners manual is a lot of help, though you may need to read through it a few times. You also get the Garmin 2-year warranty that will cover the unit if you need to make a claim. Garmin is relatively good at handling customer needs, so don't be afraid to call.

The best feature of this unit, aside from the large touch-screen, is the included LakeView mapping. Details maps and markers are preloaded in to allow you to get to your favorite fishing spot and have a map ready to go.

The GT54 transducer is included and gives you incredible detail to about 100 feet in all directions. Once properly set up, you will be able to find the largest fish and see your line drop right where you want it.

3. Humminbird 410210-1 HELIX 5

If the Helix 7 is any indication (and it is), the Helix 5 is worthy of the top spot itself. However, with the smaller screen and less imaging, it falls a few places. Included with this model are the 5-inch screen, push-button controls, and built-in GPS.

You can find your way, no matter where you are with the GPS unit. Reliable and easy to use, it also tracks your boat speed so you can keep up with the schools. You will also find a clear-view using the transducer mounted down-view dual beams, wide angle, and high detail at your fingertips.

You can also control which beam to use, or use both for an overlay and even more detail. This model doesn’t have the side view sonar, but it is an optional upgrade if you are curious. The 410210-1 model is ideal for kayaks and canoes and will even work well on smaller fishing boats.

The mount is simple, and set up is a breeze. The 1-year warranty is a little of a downer, but with the reliability of the machine, you most likely won’t need it anyway.

4. Deeper PRO+ DP1H10S10

5. Humminbird 410950-1 HELIX 7

6. Humminbird, Helix 7 G3N

For the angler that needs to have it all, the Humminbird Helix 7 G3N is the top of the top. Just like our top pick, this is the best fish finder under $1000. You will find it has additional features compared to the top pick, though. The additional cost is what keeps this model from the number 1 spot.

The G3N model gives you everything the Helix 7 comes with, including the 7-inch display, full spectrum CHRIP side and down angle sonar, and all the mapping, plotting, and tracking software.

The difference here is that the G3N connects to the Humminbird network. You can install multiple units to have them connect through the network and keep up with past and present fishing spots. You can even connect with other anglers on the water and find the best spots for everyone.

7. Garmin Striker 4

The Garmin Striker 4 is the baseline for almost all fish finders. It has features that you desire, a few you didn't even know you need, and all on a compact portable design. It is designated as the best fish finder for kayak fishing and works incredibly well for canoe and paddleboard fishing as well.

The float mount transducer includes CHIRP sonar for detailed views. You can even use split-screen mode to view sonar readings and GPS tracking. Everything is contained in a waterproof cover that comes free of charge with your purchase.

If you have a larger boat or want a larger screen, the Striker 4 comes in three sizes. The standard 3.5-inch display is ideal for shore fishing, ice fishing, or on your canoe or kayak. The 5- and 7-inch screens will work well in all other aspects.

The transducer comes with a suction cup for use on the hull of your boat. It also attaches to a float for shore fishing. If you enjoy being on the ice or doing some vertical jigging, the Garmin Striker 4 will be your new best friend.

You also get the GPS and mapping features Garmin is known for, and with a dedicated 12v battery, you can fish all day and all night without worry of running out of power.

8. MarCum LX-7

If you are an avid ice angler, you are going to love the MarCum LX-7. This fish finder is simple to operate, easy to learn how to read, and will have you catching fish in no time. The all-inclusive design even includes the battery.

Zip up the red pouch and head out to your favorite ice hole (or dig a new one!) and drop the transducer in the hole. With 8 and 20 degree sonar ranges, you will get access to depths up to 300 feet. The system will also automatically adjust to the transducer angle, current, and view options.

The battery is a 12v sealed battery. However, it is a small cell design. Fully charged (charger included), the unit can last up to 12 hours. However, some reports from avid uses state they get a maximum of 7 or 8 hours constant use.

The 8-inch display covers everything, from dual views to jigging and flash screens. You can go vertical or find your underwater current and track those cold trophies from anywhere. It also comes with a 2-year warranty to cover everything except the battery.

The one downside is that the transducer is a drop line that only has about 2-foot of cord. While you don’t need to worry about it getting lost or snagged, it may not be deep enough at all times to get accurate bottom readings.

9. Humminbird PIRANHAMAX 4 DI

If you are looking for a reliable brand and want the best while saving money, Humminbird has the fish finder you are looking for. The brand is well known for being experts in their field. Their fish finders consistently rank among the best.

They also cater to all budgets. The best cheap fish finder is the Piranhamax 4 DI. It has a compact screen and loses the Helix series's HD quality, but it doesn't take away from being able to spot fish.

On larger boats or when sharing with others, the 4.3-inch screen might be a little small. For kayak fishing or other personal vessels, it installs easily, and the wireless display is plenty of viewing space. It even displays well in full sunlight.

The transom mounting is easy enough, but you can use the transducer in the hull as well. With the available options, high-resolution sonar and CHIRP technology, you get a fish finder that is durable, water-resistant (proof according to IPX7 standards) and affordable.

10. Lowrance HOOK2 5

If you want a mid-range fish finder at low-range prices, the Lowrance Hook2 5 is the model for you. The best fish finder under $500 doesn't disappoint. You can select from various display sizes, but the 5-inch is the best deal, dollar for dollar.

You get the display in full color and UHD resolution. With split-screen capabilities, detail mapping, and fish ID, it is one of the easiest finders to use, making it an even better deal. The best feature is the TripleShot transducer.

With this model, you get down angle, side angle, and CHIRP in one transducer. You can single them out or overlay for a high-detail and easily identifiable fish-arch. Not to mention accurate results to 300 feet in all directions.

The one downfall to this model is the company itself. Lowrance caters to the budget-friendly fisherman, but it seems their customer service is where the savings lack. While you won't need to call or email often, if ever, when you do, it can be a tedious and drawn-out process.

Aside from that, all aspects of this fish finder are precisely what you would expect, and it is considered a top-buy with rave reviews.

More Buying Considerations with Fish Finders

When you are thinking of which fish finder to purchase, the below factors can help. Each decision factor is worthy of serious consideration.

Mounting Type

There are three major mounting types to consider. Which one works best for you is a personal preference based on your abilities, equipment, and where you fish.

Power Source

The power supply needed for most fish finders is going to be 12 volts. This requires a dedicated battery. Most anglers opt for a 12 v deep cycle marine battery.

Higher-end finders come with a battery supply, usually rechargeable. However, larger units and permanent units need to be wired into the boat power supply, or dedicated batteries need to be available.

Some finders require more power (12, 24, or 36 volts). In this case, it is best to use a series of 12 volt batteries to bring the total volts into parameters for the finders.

Transducer

Transducer beams are essential to the fish finder abilities.  Cone angles are wider, see more but are much slower. A beam angle is a narrow sight area but is faster and more accurate. The best transducers use a combination angle that has cone and beam angles at the same time.

Display Screen

The display screen is an important factor, as well. Older models have small, low-resolution screens. More expensive and modern models have full-color screens. Some displays are also split-screen when there is more than one input angle from the transducer.

The better pixel ratio, the higher the screen resolution. Colored displays and backlit displays allow you to see in any light or even at night.

CHIRP vs. Traditional Sonar

Traditional sonar has been used for decades. It uses a single pulse with high power but takes a long time to get a decent picture. In the last decade, CHIRP sonar has introduced shorter but more frequent pulses. The result is a wider, more defined sonar image.

CHIRP sonar transmit at more ranges and frequencies and does so using less power. Traditional sonars our still in use and being produced because they are cheaper. But it is worth the few extra dollars to upgrade to CHIRP.

Performance Features

Another factor to look at is the additional performance features. Many brands will add other features or unique benefits to make their models more attractive. Controls for frequency and accuracy, for example, are small features that can be overlooked.

Visibility and viewing angles may be selectable, but a display screen that shows them together has a huge advantage. Storage space (SD or MicroSD), network connectivity, and WiFi are also features that are worth investing in.

Price & Warranty

Finally, you will want to understand the total price. Shipping, taxes, and of course, any accessories that are wanted or needed will go into your budget planning. You also need to read the warranty details carefully.

Warranties protect your investment against manufacturing defects, issues that can arise during regular use, and other unforeseen problems. However, the coverage period, exact items covered, and claim requirements will differ. Make sure you know what you are getting into.

How Fish Finders Work & Why Anglers Use Them

Anglers use fish finders because they give you the advantage of seeing under the surface to find fish. You also get to see bottom contours, water depth, and other underwater obstacles.

Fish finders work by sending a sonar pulse through the water. The pulse bounces off of fish, debris, and the bottom. The transducer records how long it takes for the pulse to return and visually displays the results on the screen.

Fish Finder Pricing Guide

Fish finders generally fall in 4 price ranges. The sub-$100 fish finders are small, don't have a lot of additional features, and may not work for large boats. Mounting can be an issue as well, but they work.

In the $100 - $200 range, you begin to get better display and mounting options as well as more options and features. The displays and mounts are still not the best, but they last longer than the cheaper range.

For the finder in the $300 to $500 range, you will find the most features, best displays, and most brands will offer extended warranties, accessories, and other beneficial items. For those that cost $500 or more, the best of the best come out. Only professional anglers tend to go for this price point, constant anglers and intermediate fishers will find the best deal in a cheaper range.

Brand Comparison: Garmin vs. Humminbird vs. Lowrance

Tips for Installing a Fish Finder for Boat or Kayak

Installing your fish finder gives you a lot of options. The most common boat installation is a transom install on the outside of the starboard hull. The through-hull install is the most meticulous but also the most reliable.

You can also use a pole mount if you are on a kayak, and keep the transducer in the water while fishing. Keep in mind that the battery and display mounting locations need to be planned out before making any permanent decisions.

How to Read a Fish Finder Screen

Reading a fish finder screen can take a bit of practice. For higher-end models with Fish-ID, the fish are turned into fish-shaped icons. For other models, you need to learn to identify the smaller V's, or arches, that appear on the display.

Displays in color are easier to learn on, and you can distinguish between the floor, debris, and fish. The fish arches can show you the width and length of the fish, in general terms. With enough practice, you can find those trophy fish out of the masses below your boat.

Common Fish Finder FAQs 

What is the best Lowrance fish finder?

One of the best Lowrance fish finders is the Hook2 5. The 5-inch display and simple controls give you great views of the underwater scene below your boat. You also get triple sonar views along with detailed US coastline mapping preinstalled.

What is the best Garmin fish finder?

The title for best Garmin fish finder is a little bit more complicated. The Striker 4 is worthy of that title. With multiple screen sizes to choose from, along with CHIRP sonar, you can take it with you on any fishing trip. It also works well for vertical jigging and ice fishing readings.

What is the best Humminbird fish finder?

The Humminbird Helix7 is easily the best Humminbird fish finder on the market right now. With a 7-inch high res screen, dual GPS and transducers, built-in coastal maps, and all mounting hardware and accessories included, it is the best in a long list of great finders.

What is the ideal screen size for a fish finder?

Screen size is a debate that will go on forever. For most instances, you will want a screen size that is about 7-inches in size. Less than 5 inches and they become difficult to see and have glare issues in direct sunlight. Over 7 inches, and you run into mounting and storage issues. For most watercraft, a 7-inch screen is ideal.

Are all fish finders waterproof and weatherproof?

Actually, no. Fish finders have waterproof parts, like the transducer, and most of the connections are weatherproof. The displays and batteries, though, are generally weather-resistant and not much more. Some brands will market waterproof systems, but they only refer to the parts of the system that go underwater.

Which is better, down imaging or side imaging?

The answer depends on the type of fishing you are doing. Deepwater fishing will benefit from down imaging, as will catfishing, ice fishing, and jigging. For shallow water, shore fishing, kayak fishing, and pier fishing, a side imaging system is better.

Are there any other necessary accessories to use with my fish finder?

What is the easiest fish finder to use?

The ease of fish finders is relative to your experience and knowledge. If you have never used a fish finder before, Garmin and Lowrance make beginner-friendly models with minimal controls and are easy to read. If you have used fish finders in the past, learning new technologies like CHIRP can change the learning curve, but Humminbird and Garmin also make fairly intuitive displays with controls that are simple to use and won’t take long to master.

Where is the best place to buy these fish finders, fish finder mounts, and other angling accessories?

The best place to buy fish finders and their accessories will be either through the respective brand's website or through Amazon. Both places will have a good quantity in stock, but Amazon will also have older models that may not be for sale through the company sites any longer. You can get great deals on new-in-box models and accessories through the 3^rd party vendor site.

Conclusion

Fish finders make finding and following schools and trophy fish easier. Choosing the right brand, size, and model for your specific needs can be challenging. For those still on the fence, a modern finder with CHIRP technology, large display, and simple mounting options is the best bet.

For those reasons, we highly recommend you take a second look at the Humminbird Helix 7. It has everything you need to connect the finder and get on the water with expert finding technologies right out of the box.