I have an '82 Evnrude 50 horse,I am currently running a 12 1/4x15 prop that runs @4800-5000rpm WOT,what will switching to a 13 3/4x15 prop do for me?<br />I found one uber cheap so if it won't hurt anything I may go with it unless it will kill my top end completly.<br />I am pushing a 16' Sea...