Lost here!, have a 1988 mercruiser 3.0 alpha1,I've read the post on "the basics of selecting a propeller" very good info. my boat is 17-1/2ft 2000lbs with 4people,the most I will pull is 1 tube or skier. prop is now a 15/19 but worn down some, looks like it came with the boat in 1988. Merc...