The design on many propellers includes a cup on the blade's trailing edge. This cupping or curved lip on the blade edge lets the prop grab the water more efficiently.
Getting a better bite on the water reduces ventilation, slipping, and often allows for a better hole shot too.
Cupping works very well where the motor can be trimmed, positioning the propeller near the water's surface.
We tell you everything you need to know about props from cupping to ventilation.
If you want to modify your boat's performance, consider the above before making your selection.
For safety and efficient performance, it is critical that your engine operates within the RPM range recommended by the manufacturer.