Anyone of the ones like this will work (this one happens to be from Bass Pro)
http://www.basspro.com/Bass-Pro-Sho...hvarAID=shopping_googleproductextensionsBUT you have to be
careful with them. When you make a turn with the motor that turns the motor towards the Canoe, they have a VERY strong tendency to try to flip the canoe because of not being on the center line of the canoe.
The prop digs in, and tries to go under the canoe very quickly !!