...I don't know that much about boats...I've been around quite a few..but only bought my first one last season...and am still working the kinks out of it....
....BUT!!....I have many friends with boats and they've done what your looking to do. What they did was contact the manufacturer of the boat for the specs. on the possible weight limits of the outdrive and the actual best place to mount it.
...My friend had a marina mount his. 3 weeks later, it CRACKED!!!...thats when called up the manufacturer (Customer Service) and they told him how large he could go, and the best place to mount it. He ended up doing it himself, and hasn't had any problems since.
If you have any questions you'd like me to ask him.......start typing!!

