Hey everyone I'm looking at going to a four blade prop and wondering what the pros and cons of each prop is. They seem identical besides the rubex has a rubber hub which seems strange but I would like some real feedback. My boat is a 1980 glastron cvx 16.6:700lps, 1983 mercury 1150 tower of power:350lps. Current prop is a quicksilver three blade 21p SS, it does a good job with the top rpm right on the money with a 52mph top speed. I mostly use the boat for wakeboarding so i'm looking at a 19p fourblade so give a lower planing speed and better holeshot when towing a boarder with the boat loaded with people. Any feedback and advice welcome.