Curiosity killed the cat! I had to try a Mercury trophy sport (s.s. 4 blade). Went with 12P. WOT rpms are now 6000 - right where I want it. I was hoping to get a little more speed and an even better hole shot. Hole shot about the same, maybe a tad bit worse. Top speed the same of 31 mph but I got to 31 really quick versus old prop having to really work and keep tweaking the trim to get to 31 mph. Didn't really get to try for more speed due to small lake not allowing enough room. Might be able to get 1-2 mph trimming it out some more. For what its worth. Thanks for the responses!