Initial trial I like it. We replaced Yamaha 21-M 3-blade on our 2012 Ranger Ghost 184. Hole shot is faster. This propeller is very quick to plane, especially with the tabs down. By far much less slippage out of the hole and accelerating. (Can feel the slip/cavitation with the 21-M) Top end RPM now 5700. (Up from 5100) Top end speed is right at 47mph (about the same as before) Trims up much farther before porpoising. (Atlas jack plate on 3-1/2”, needs to work with this) 3500 rpm gives 31 - 32 mph. Close to previous, maybe just a little better. Fuel efficiency has dropped a little I think, but am not sure; will check further with the fuel flow meter. Will send more information; this is just from a 15 minute initial trial; 3/4 fuel, 3 people (450lbs).