I recently bought an '85 Suntrkr 24' pontoon w/'92 Merc 115hp 2stroke 4cyl, stationary trim. Prop is 14", not sure of pitch. Runs smooth @ 4000 rpm and @ WOT (5300 rpm), but a little rough at other speeds. Can someone recommend the best size prop? I'm more interested in power than speed as I eventually plan to float the Ark River to the Mississippi R. Thanks
