I bought a 1978 Saf-T-Mate, Four Winns 18' bowrider 3.0/140 mercruiser off Ebay last November. Taking it out this spring I was surprised at the performance, quick out of the hole and on step fast. I havent skied in 20 years but did enjoy a slalom course in my day:D.
It has a michigan prop, 15"...