I have a 1959 feathercraft 14' tinny, that weighs 169 lbs empty. it is mostly flat from about 1/3 of the way back, and the beam is about 48" at it's widest. I have a 5 hp Briggs on it for now, just to have something to use on it, but with 2 batteries, 2 corn fed southern boys, and all our...