Thank guys for all the input. I have set the messed with the surface clutter settings, sensitivity, sharpness, and the auto depth settings (auto) already. I will try to change to the "salt-deep" setting and see what happens. Its really strange when it happens. I will be drifting/trolling along and when I get to around 10-11 feet deep it goes hay wire and reads erratic depths over, usually over a 1000 ft. I will then move to deeper water and sometimes it resets and reads accurately, while most of the time is needs to be shutdown and restarted. I will let you guys know how things turn out. Thanks again.