I have a 2000, Merc 90 hp, serial# OT120836 on a very light weight 17 ft. bass boat. It will run 41-42 mph at 5200 rpms. The prop to pad is 8.5 inches. I'm currently running a 21P aluminum prop. It gets bright spots in the paint where it's cavitating and burning the paint off. I had one of the blades snap off right in line with the burn marks. It gets on plane very well even with full fuel tank and full livewell and two people.
The boat will run the above rpm's and mph all day long in smooth water but any little wave with cause a rise in rpm's and a decrease in speed by 3-4 mph until I back out of the throttle and trim down a little. There is zero rooster tail.
I want to switch to a stainless prop just for the durability but I'm also looking to lessen the cavitation if at all possible. I know the motor needs to be raised and that is in the works.
Any recommendations for a stainless prop that will cure most of the above mentioned woes?
Thanks.