John Stevens from Redcliffe Brisbane, ran a outboard motor with belt reduction, pusher, on a amphibian 95.10 he designed, an incredible little A/C , doubt if there will be any footage of it. Cooling shouldn't be a problem. We raced a Peugeot 404 in a Hydroplane, water feed was 1/4 inch copper pipe scoop on one sponson and we had difficulty getting it to run hot enough. It was doing 80 MPH though.