I like this design...

http://www.rowvirusboats.com/wingdory/index.html

I really like the shape of a dory, this would be 2 sheets of plywood instead of one, but far far more user friendly in the water. Really thinking about it, I don't see why it would not actually be easier to do. Much better looking also, it would of course be minus all the rowing equipment. I bet it would handle real good, what do you think?