There is an obvious problem, which I am sure you are well aware of, with cavitation on 27" pontoon with Yamaha 115 motor. What is the manufacturer stance on this issue? I read where one person received a longer propeller shaft under warranty? There have to many people out there with this issue? I have had the boat on the water 3 times and it runs terribly. The trim is all the way down and still does not work right at 4,000 rpm.