The 3 blades not the 4. (I’ve broke all my 4 Blade et’s )Has anybody ran them on a XB21. I know there not going to be a great fishing prop but what about a play prop? I have a few of those on hand to play with. I know they rip on my xb2002 but have never heard of anybody running them on the big boats. They will lift a 21 foot Bullet as long as it’s not loaded to the gills. If they will lift these boats a 28 should do pretty good on mine. I have allot more rpms to play with than most do.