[/quote]Its likely that the 2.5 can't plane the canoe so it operating as a displacement hull. If memory serves the Hull speed for a 16" is something like 5 Knots. You can drive a displacement hull faster than hull speed but it requires exponetallly more power to do so.
My guess is that your 6mph is hull speed for your rig, applying more power gains little until you can get it to plane. [/quote]
That's what I was thinking. The prop pitch idea may be valid as well, but I'm thinking the drive train might be effected by increasing the push.
The Canoe hull isn't like a jon boat. It pushes water to the sides. I have the trolling motor battery up front so the front stays pretty low. I may try moving it closer to the middle.
