prop question

[88malibuskier]

re-built an 88 malibu skier...........origanally had a 260hp merc..............new motor is approx. 510hp................how would i prop this to take advantage of the extra hp? stock prop is 13x13 1" shaft

 

[oldjeep]

Re: prop question

Depends on what you are trying to do. If you are using it for skiing I would just leave it the way it is. If you are trying to set speed records then maybe swap it out.