have a 1968 mark twain bay boat i have no idea what it weighs but it is heavy..it has a 50hp evinrude and according to gps it was moving about 8 mph with my father in law me tackle and ice chest and a couple of other small items...the motor has 120-125 compression on each cylinder...doesnt miss at all...i'm in the process of checking to make sure the carbs open up all the way...and to hook the tach up and also going to check the timming any other ideas thanks
