For any application the best prop is the one that allows the motor to work in its torque curve sweet spot at the normal speed of operation. For most wakeboarders, this is 19-24 mph. Because of this, many wakeboarders use a prop with less pitch and sometimes smaller diameter than an all-around prop that is based upon top speed. If you have a prop with too much pitch, you can lug the engine and consume more gas than a prop with the right pitch for your application. Think of it as a gear ratio or transmission with only one gear.
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