Re: Is 9.9 mercury to big
While I agree that motor will be a bit heavy for that boat, I had one a few years ago and thought that a 6hp Johnson 2 stroke was too heavy for it. I ended up running a 3hp Evinrude, which worked great. I had always figured that one of those 5hp Briggs Stratton air cooled motors would have been perfect but I never did find one for it, I sold it when I found my 12' V hull I have now.
The Pelican was great for small, back creeks and ponds though, it would go anywhere if you kept the load light.
I'm not sure if they can actually ticket you for going over the max hp, but it would be a liability or insurance issue if anything ever happened. It would no doubt void the boats warranty if they knew.