I bought Josh Sikes Puma that has a Gorilla Hull. I paid Josh to take it back to Toledo for their tune up.They are supposed to have a guarantee to get your boat back to the speed it ran before the G.H. was applied. According to Josh his boat ran 79+ light loaded and 77 loaded before the G.H. After the G.H. was applied it ran 75-76 light and 74 loaded. As of this date , and after being tuned , it still runs 74-75 light and 71-73 loaded. I have called Toledo 4 times now as i am 10 hrs away, and not in position to run back and forth.I have tried tried other new props , tried engine height from 3 1/2″ – 2″ below the pad with no speed gains. Now i am being told it must be the replacement gearcase that Josh had put on a few months ago. Seems almost everyone looses 3-4 mph which the tuning process is supposed to rectify. I am glad not everyone has had our experience, but if speed is important , get the details in writing .