D shape is what I was thinking. I'll give it a try. Probably right
on the transom. I was thinking the motor mount would be too wobbly.

I am reliably informed that a yuloh can be used for many hours with
little stress or strain. Whereas oars (fixed seat or sliding) take
the starch out of me pretty quick. Thinking of doing the Watertribe's
Everglades Challenge in the spring and need as many options as
possible to keep moving.

Thanks for the help.

Tom