i was talking to my dad about a motor and he said why dont you take the 15hp johnson 1984 long shaft from under the stairs.....WHAT...... i forgot all about it. very little use and not used since 1988. and it weights 18lbs less than my current 1987 9.9 yachtwin. Sent it in for a carb clean and look over, purrs like a kitten. Now what prop do i get? need help on that. Lake macatawa, lake michigan sailing. Not big on going out in high knots yet