I purchased a 19 pitch Solas Titan HR for my Yamaha 175 HDMI that is underpowered for my 20' Skeeter. I was only getting about 45mph with wot @ 6000 rpms on a 20 pitch aluminum. Tried this prop and now I'm getting 53 mph with wot @ 5600 rpms, so I picked up speed and brought down my rpms.
I spoke to Dan for some initial issues I had and he was great explaining what I needed to know.