i have a 93 monark aluminum 17' bass boat w/ 70 hp force that blew up, im going to buy a new motor BUT i want a little more power for pulling a skier (the 70 did ok but it was under a load when i was pulled, but it did do ok) but it is only rated for a 75 hp. transom looks good and everything. should i go w/ a 75 hp or what i want, which is a 90 hp???