How To Find the Best Fish Finder: The Definitive Guide

TitleLowrance Elite-4x DSIGarmin echo 550cHumminbird 597ci HD DI Combo
Lowrance Elite-4x DSI Color FishfinderGarmin echo 550c FishfinderHUMMINBIRD FISHFINDER 597CI HD DI COMBO
Screen Size3.5 inch5 inch5 inch
Screen Resolution320 x 240640 x 480640 x 640
ImagingDown Imaging2D2D and Down Imaging
Transducer TypeTransom Mount/Trolling MotorTransom Mount/Trolling MotorTransom Mount/Trolling Motor
Transmit Power350W RMS300W RMS500W RMS
2800W PTP2400W PTP4000W PTP
Sonar Frequency455/800 kHz200/77 kHz200/455 kHz 2D
Maximum Depth200 ft1900 ft600 ft 2D
PriceCheck Price on AmazonCheck Price on AmazonCheck Price on Amazon

There are many people out there who are very passionate about fishing and while some of them will prefer fishing the old fashioned way, there are many who would like to take advantage of the best and most modern technologies for doing so. In this regard, it would certainly be a great idea to consider the Best Fish Finder and go fishing. The fact is that there are many models on the market and many people will have a great problem with selecting the best one. Well, in order to clear the mystery, the following article will focus on the main aspects that you’ll need to keep in mind when you want to get a fish finder.


When looking at a display, you need to keep in mind a few aspects. They include size, resolution and color.

  • Size

As with many other devices, the larger the screen, better the view, but you need to make sure you have the budget to go for a larger screen. Using a larger screen you’ll be able to read the data off it much easier and bigger screens also offer you more detail in general. And when you choose a GPS and Fishfinder combination, the larger screen size will definitely come in handy, because most of the times, the Fishfinder and GPS will actually share the screen.

  • Resolution

Most of the times the resolution of a screen will be expressed in a horizontal and vertical pixel count and the more pixels a screen has, clearer the images it will be able to display. Bear in mind that it’s very much recommended you’ll go for a screen that has a high resolution if you’re going to fish in deep water.

  • Color or Mono

While the black and white screens are much cheaper, if you have enough money then you will love the benefits of color screens. Latter, you will find it to be much easier to fish, because the information on the screen is very simple to interpret. But don’t worry if you cannot afford one, because the Mono will get the job done as well.


If you do not have a transducer, then the fish finder will not actually work. That is why if you’re not sure whether a fish finder will feature a transducer, it’s always better to ask to get a clear answer. The transducers also vary in types and you can go with any of them.

Transom mount transducer: This is the most common type of transducers, which contacts well with water and it is mounted on the back of your boat. It’s a great solution if your boat is smaller in size.

Thru-hull transducer: This type will mount through the hull and when it passes through water, it will not be subject to cavitation interference. It’s a more expensive option and it’s usually a good choice if you have a larger boat, but in order to properly protect it, you may require a faring block. Speed and temperature are available with the thru hull transducer.

Shoot-thru or in-hull transducer: While it may not be a common type, it is still a good option and you can mount it inside your boat, emitting sound waves through the boat’s hull. You’ll need to learn how to use it properly and you should also exercise great care with it, as it’s quite expensive.

Sonar Power

The power of the sonar is very important, especially if you are going to fish in deep water. The more powerful the sonar, the stronger the return signal will be. There are 2 ways to display sonar power on a fishfinder and they are RMS and peak to peak. The latter is eight times of RMS.

Single and Dual Frequency

If going for a single frequency model, it will transmit signals at a frequency of two hundred KHz, which offers a quite narrow view. Going for a dual frequency model, it will manage transmitting signal at fifty KHz and two hundred KHz, which means you’ll get the best possible view of the water under the boat, regardless if it’s deep or shallow water.

With that being said, these are the main aspects you should consider if you are looking for a great fish finder. Before buying your desired model, be sure to also read the Fish Finder Reviews.