I have a 2014 Ranger Z521C with a Mercury 250 ProXS. When I first purchased the boat it would run 67mph top speed with 2 people no tackle Fury 24p prop. I had gorilla hull installed in December. After the install, it was running 63.8 @ 5600 rpms. Once tackle was added with my tournament partner and I, it was running 59 @ 5600 rpms. After talking to Steve's prop shop, I switched to tempest 24p that was worked. The boat definitely lifted better than it ever has with this prop, but still only running 61.8 on GPS @ 5600 rpms fully loaded with partner and I. Does anyone have any experience with a gorilla hull on a similar boat? Any suggestions on setup?