We had a 16' jon dory for 18 years that pushed close to 35-mph with a 30-horse Envinrude on it, and later a 30-hp Yamaha. Going that fast in a boat with no keel or strakes could be scary if you hit a wave unexpectedly, or dug in on a turn. A 25-30-hp motor on your 15' dory should be more than sufficient.
Chris
This post edited by Hunt n' Fish 12:41 PM 05/07/2008
Chris
This post edited by Hunt n' Fish 12:41 PM 05/07/2008