I have a 2001 tracker pro deep v 16.5 Console with a 2001 mercury 2 stroke, boat max rated at 75 hp. I am thinking about replacing the motor with a Yamaha 70 or 75 four stroke.There is a considerable weight difference and price difference for that matter between the 70 and 75 hp Yamahas . Anyone care to weight in on pros or cons?  I’m leaning toward the 70 hp.

Boat would spend most of its time on a flowage 1400 acres lots of stumps etc so only occasional long WOT situations.