RE: duck boat
I'd suggest you check out some of the local boat shops/pawn shops for a small outboard. If you figure your going to spend $50.00 for a battery and a $100.00 for a fairly decent trolling motor, you might be able to pick up a 2hp or so for a hundred more. Otherwise the trolling motor will work find if you stay above 35 ftlb of thrust but watch out for heavy winds they eat batteries up quick.