NEWB HERE! I had a "sonar" from the dark ages on the boat and the ONLY time I ever turned it on was for surface temp ideas so I could try and decide to fish from "my new to the area knowledge" vs what I knew from the past of "where and I more than likely to catch a fish". I'd love more info with my new toy. And yeah I have been in a few fully rigged boats but just did my "thing" and kept up with the graph watchers while fishing. So setting info for the most common senerios I'm all game folks. Again, my fish-finder is "oh that line tree about 20' off from that dock of the 'A' Frame cottage" is how I have fished forever... Cheers