Martin - ditto on the twin 115s - that's a nice setup on that boat. Remember, "back in the day" when your boat was built, the biggest outboard you could buy was the Mercury 135 or the Evinrude 125 (and that was crank HP, not prop shaft). A lot of the Sea Hunters were sold with twin 115 Mercs or twin 85/115 Rudes. That 115 Yammie you are looking at is at least 115 prop shaft HP. It will take a little work to get her propped right, but once you nail down the right prop, you will be happy with the performance. You are also right regarding weight - saving 200+ lbs on the transom is a good thing.