LoL Terre says that like she isnt an expert.TAL0362 said:Do you still have the old prop? The pitch should be stamped on it...
Do you know how fast the boat went (GPS) - you could back calculate knowing gear ratio, max rpms, and an assumed prop slip (like 5-10 % or so).
I like Stainless Steel, but aluminum is good too. I have never used a composite prop.
In my experience 2" less pitch than if you were at sea level... so say 17" pitch at sea level and 15" pitch here in colorado.
It seems like most props these days are cupped, vents are common now, they are supposed to help with hole shot.
Some props do perform differently than others, if your really trying to get the last bit of speed / performace do as laker taker says, talk to an expert.