Sometimes. You said that your Hummingbird is mainly used for depth, gps, speed and terrain?
After reading the reviews, sounds like it can locate fish and I could use it for some shore fishing as well. Wondering how well it would work compared to yours and others for locating schools of catfish. As I head up the Mahoning, I might drop it in every 1/2 to 1 mile and check for fish or underwater brush. Might be a cheap alternative until I save for a better one?