Vern, Why do you prefer the side-mount over the square stern? Just curious as it seemed everyone wanted a 19' square stern grumman when I lived there.
I imagine you are talking the extra classy Gruman Sport boat? Looks like an over-wide canoe? A lot of folks run bigger propped motors with a jack-up plate, even Mud Buddys and air boats with props driven by air-cooled motors designed for inflating hot air balloons.
Getting the motor out to the side makes it a lot more comfortable to run for long distances or long trolling sessions...