Recently my old 5hp Mariner Outboard, that came with my Catalina 22 last year, quit working. I'm not interested in resurrecting it, but want to take the opportunity to buy a new motor. My question is, since I sail in a small lake and only sail in winds of 5 to 15 knots, can I get away with a smaller outboard? If so, what would be the least hp I should go? Would appreciate any input on this.