I've been looking forever for a good deal on a 50hp short shaft tiller outboard and have never bought one yet. I have a 25hp Mercury short shaft that just can't get the boat on plane and the max HP for the boat is 50hp. I saw a listing from Yamaha about a 50hp short shaft (new) for 3,800 and it seems too good to be true. I'm thinking of buying a standard shaft (much easier to find) and using a jack/plate/whatever it's called to adjust the prop height. Does anyone have any advice on a good jack plate that I could put on my transom? It's a 16 1/2 ft Sea Nymph, aluminum "Fishing Machine". Any help appreciated.