Hi Erice, I sent you a long winded reply.
Re the OB idea, the high, pointy back end it problematic - this guy made it work: http://sv-ulladh-log.blogspot.co.nz/200 ... chive.html
Personally I hate outboards... noisy, heavy, fuel guzzling things that ruin the lines of a good boat. I love being able to carry them into the garage and rebuild them on the bench though