I guess I should have explained it better but since mine is a low power unit and I only do this type of fishing for the most part in winter when there is very little plankton to cause clutter on the screen I can turn it all the way up and only see fish, bait and lures when fishing this way. But, you will have to turn the sensitivity down to remove clutter caused by plankton, debris, mud particles, etc in other situations. I do have to adjust mine down in summer when there is more plankton in the water which causes clutter on the screen.