Around here you can buy someones old discarded 15-16 ft bass boat for couple hundred bucks. Screw a deck over the top and away you go. If you get the trailer or motor with it you could sell it to cover your costs. Little redneck but would work and easy to move or moar to the bank. Wider the better for stability. Might think about a extra wide flat bottom boat also.

Dear Alcohol, We had a deal where you would make me funnier, smarter, and a better dancer... I saw the video... We need to talk.