If your looking for a new fish finder, but want some more info before spending the cash, check out this video as I walk you through the sonar menus to give your some insight as to the features a $100 fish finder like the Garmin Striker 4 has to offer. I have been very happy with this sonar unit, and it has performed well for me on my Yak.

https://youtu.be/EeaNZWybMNc