I want to setup dual batteries, and wanted to know if anybody has good place for instructions and a suggestion for the switch.<br /> (2) I took the boat out last weekend for the first time. If I gave it partial throttle from idle it would bog down and not go. If I gave it full throttle it would take off and get on plane, and then I could throttle back down some and be OK. Boat just didn't seem to have the power that it should. I could only get 3800 RPM running 35 mph(according to gage). A friend of mine said it sounds like maybe I have a little water in the gas tank and suggested to put some HEET in it. Does that sound right or do I need to check something else? <br />It is 3.0 Merc with Alpha 1 gen 1, 17" SS Rapture prop. Thanks