If you have strongly been considering purchasing either a fish finder or a GPS for your boat, then you are in luck because this review post is going to help ensure that you know exactly what you are looking for to get the best of both worlds when it comes to a fish finder and a GPS.

To get the best overall unit in the smallest and most portable package, you should really consider buying a unit that combines both of them into one strong unit. Both of these tools can be incredibly helpful to fishermen and it only makes sense to have both of them together. The following information will help to ensure you get the best fish finder GPS combo to meet your needs.

blue sea offshore fishing boat with fisherman holding rod in action


When it comes to the actual fish finder, one of the most important parts is the transducer because it helps to send the waves and shows you what is underneath the water as the signal will bounce of the objects and return to the transducer which will then turn it into a picture.

If you are worried about the transducer, one of the best things you can look for is the cone angle. The more coverage you want in the water, the wider the cone angle you should buy. However, wider cone angles to come at a cost as they cannot penetrate as deep into the water.


For both the fish finder and the GPS, the display is incredibly important because you want to make sure that you can clearly see everything there is to see under the water as well as the maps that indicate where you are going.

The more pixels you have on your display, the easier it’s going to be to see exactly where you are going. More pixels, of course, comes at a higher price point so keep that in mind as well. In addition to the pixels, the size is going to be an important consideration since the size helps make it easier to see.

Since you’re already spending money, it would be wise to spend a little extra to ensure you get what you want out of the display.


Another important feature for you to keep in mind when purchasing the unit that is best for you is the power. Typically measured in Watts, you will find that the higher the wattage, the better it is going to work and the quicker it will display the readings and depth for you.

If you plan on only fishing in shallow water, then you can most likely get away with a unit that only has about 600 watts of power. However, if you are going to fish in some of the larger and deeper bodies of water, you should consider a unit with around 1000 watts of power.


Another important feature of the transducer on a fish finder is the frequency. You will find that the frequency is practically directly related to the angle on the cone and on just about every transduces you find, there will be four frequencies ranging from 50 to 200 kHz. The higher the frequency you use, the more detail is going to show up on the screen.

Portable Or Fixed

The next choice you have to make really comes down to personal preference and whether you want to find a unit that is easily portable or one that needs to be mounted to the boat in order to use it.

Simply put, if you only have one boat and it is the only boat you use to go fishing, you can get away with buying a fixed unit. However, if you have a couple boats and you want the freedom to take the fish finder on all of them, then you need to buy a portable unit.

Maps And Charts

More specifically geared to the GPS aspect of the fish finder, you want to make sure that it comes with the basic maps and charts that you need to help ensure you can get around. You should try to find maps that are incredibly detailed, even if you think you know the area well enough.

The more detail the maps have, the better you will be able to navigate some unfamiliar waters and it can really help you out if you happen to get lost on the water and need to find your way back home.


As you can see, there is a lot of thought and consideration that goes into choosing both a fish finder and a GPS, so when you combine the two together, there is sure to be a lot of thought needed.

By following all of the information provided above, you will have no problem determining what you should look for in a fish finder and GPS combo as well as which one is going to help suit your needs best.