On Mon, 17 Sep 2012 16:01:17 -0400, JustWait
wrote:

This would be the boat with the canvas top added to the drawing... The
real beauty of this boat is the months I spent lofting it, with input
from several world known SNAME Engineers especially in the after
sections of the floor and sides/transom to make it efficient with a
smaller engine. It will be a wonderful river boat (most agree it
"should"), and should be just fine with a 35-50 horse engine.

===

In my experience the most efficient bottom shape is dead nutz flat,
carried all the way aft to the transom, at least in smaller boats.
That shape doesn't ride very well in a chop of course, but it is
highly efficient for getting on plane with very little power. When I
was a kid we had a flat bottomed wood skiff about 12 or 13 ft long.
It was relatively lightly built but no exotic woods or other extreme
measures. With an old 7 1/2 hp Merc it would plane my brother and I
at about 15 mph. With just one person on board we had to put a big
rock in the bow to trim it out. It would do 17 or 18 mph in that
configuration and get about 35 miles to the gallon.