I run a 250 pro xs on an 09 Puma as well. The prop seems to run best while running a little flat. I get out of the hole great. Trim up pretty much full, then as speed increases I have to bump the trim DOWN, and speed will actually pick up and the chine will almost go completly away. Top speed with mine has been 78.4 full. Not running like my last Cougar but ride is better and seems to handle way better.
