Interesting. Are these meant to be an alternative to four blades on Bravo 1 boats? I am no prop expert, but it would seem like 5 blades would grab more=more resistance on Bravo gears. I like the idea of increased cruise at given rpm. Just curious if I have the application right. I have 1.5 B1s with nose cones. I'm running four blade 24P Bravo 1 now.