I'm having a problem with my gen 2 losing depth when running on plane or any speed other than idle. I have a Gen 1 also, both units are set up the same that never loses depth except in rough water (aluminum boat). I've had the gen 2 at the console and bow, it's not as bad on the bow but it does go out randomly. The Gen 1 is fine. I can't figure out what is wrong, i've installed all the updates, I'm starting to think there is something wrong with the unit. Any ideas?

Your losing bottom should be a transducer problem not a head unit problem. Since you have moved the head around, I assume that the ducer stayed put. If so then it has to be a head problem and I'd be calling Lowrance asap.

Yeah the ducer stayed put just the unit. I made sure they were both set to the correct ducer type. I guess I will have to call them.