OK BajaDan, to make you feel better, I did ask if any where powered by Propane, and low and behold a few gentlemen said, 'Just 1, and it's arriving right now."
So I stayed until it docked a few minutes later, and here it is. 1 of 2 paddle wheeler's here at the meet.
This one was tiny. Cool boat though. Look closely at 2nd pic in the back and you can see top of barbecue size propane tank.