I have a 17' Wenonah canoe. I think it's the Northfork model. It's pretty heavy duty, but I wanted it that way so I could bounce off rocks and such. Not to mention the added strain of a motor pushing it.
I'm running a 3.3hp Mercury 2 stroke that weighs right at 30 pounds wet. They are hard to find these days, but if you search the internet you can grab a few. I actually had mine shipped in from Idaho. You've got to keep the weight down or the boat will list bad to one side.
It handles pretty well, but you have to remember, you are in a canoe. No sudden movements while at speed, and try not to hit anything or you might get wet. When I'm running, there is enough squat to bring the freeboard down to about 5 inches, and then there is spray as high as the rails. But it sure beats paddling upstream. We use them on the Dix as well as the Cumberland when they aren't generating.
Go to the following link for some photos. A buddy of mine has the same setup, but with a 15.7 Old Town.
http://picasaweb.google.com/kennethk...eat=directlink