Hey everyone, I bought a Lowrance Hook 4 chirp (with gps) last summer. Tried it out on the boat as well I bought a ice pack for it last year for ice fishing. Having a hard time getting the settings right. Seems like I either have to much junk on the screen or im not picking up anything. Fishing column is full of blue dots. I've tried turning down sensitivity but think i'm missing something. How do you have your Lowrance system set up?