I started having this problem two summers ago. It started out just once in a while. The motor will run perfect in neutral, even when you rev up the throttle, but once it is in gear it has no power and bogs down under a load. It used to run awesome on the open water then it slowly would bog...
I have a 14ft V-bottom Lund fishing boat. Use it for fishing and whatnot. It is a pretty basic boat, no previous wiring. Here is the setup I am thinking of doing..
Batteries will be up front under one of my seats. I am going to parallel two 12Vs together, and then run 4 awg wire to the back...