This weekend my friend had me ride in his boat to see if an improvement could be done to his rig. So here is his set up 18' Lund fisherman, with a merc 125hp, boat and motor are both 2002 model year.
WOT 4800rpm
Max WOT 5250RPM
Top speed 36mph
Prop merc black max 21P
gear ratio? I couldn't...