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Fire D..

There are others on this forum that are more savy on prop selections than I am. Tom Clark is one resident Guru and may chime in.

That said, I went from a 10 1/2 X13 prop to the Stainless 12 X 11. I believe that lowering the pitch and increasing the prop diameter helped with the stern lift. This gave me a better hole shot and less porpoising. I did loose a few rpms in the process (WOT is now about 5100 - 5200 depending on sea conditions) Top speed stayed about the same.

My Merc is a small gear case motor, so the heavy 12" diameter stainless is all she can manage to spin, and I do get some minor prop rattle at low rpms. But, once she bites above 1200 rpms, its about 2-3 secs to plane with 2 aboard and gear (not much more with 4 adults). Also the lower pitch allows me to stay on plane at about 14 mph.