I have a 99 BAJA Boss Hammer and am trying to get all the speed out of it I can with out doing anything to the motor(7.4mpi). The boat currently has a Mirage Plus 25P prop on it and I am thinking about having it lab finsihed or was considering going up to a 4 blade prop from my current 3 blade. Does any one have any experience with doing this and what can I expect as far a takeoff,planing, and top speed? The boat is running by the spedo with 60 gallons of fuel,4-6 people and coolers 67-69 in any type of water or temp.