I'm going to have a 15'4" built for the shallow Bama creeks I like to fish. I see a lot of Gheenoes listed with 15HP outboards despite the 10HP rating. I have a very good 15 Yamaha 4 stroke that I plan to put on the new hull. Can I get some opinions on doing that? Wondering if I need to beef up the transom or any other issues that I don't see yet? Thanks.