diy outboard from briggs and stratton motor

[floydrob]

hi, no1 has replied to my earlier thread regardinbg the size of outboard for my 14ft hydroplane, but what about baking an outboard from a 6hp briggs and stratton horizontla shaft motor with a belt drive from the clutch to the prop. it already has a centrifugal clutch on it, so stasrt it at idl;e, and as i put on throtle it will start to turn. i know it sounds like a crazy plan but i could save alot from a 6hp outboard. i was going to mount it inboard but the keel isnt big enough to house the cutlas bearings.
what do u think and can u give me some suggestions on what i could improve or do different to make it better. thanks