when I had a Catalina 22 I used a 4 HP motor and I never wished for more power. The boat weighed about 2000 lbs, so I would say that WanderingStar's formula is correct.
Lastly, a long shaft is more important than more HP from a short shaft. A big motor that comes out of the water in waves / chop won't work as well as a 4HP that is in the water when you need it.
Deep Blue C, 2002 C&C 110
Mt. Sinai, NY
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.