My 2021 Craz came with a "high altitude" prop. OJ 930 15.5 X 15. We mainly boat at lakes around 6,000 ft. and the prop does a pretty good job when loaded down for surfing, but it does struggle a bit from time to time. I don't have a spare and need to get one. I called Nettles and they said they would recommend the Acme 3407 which is a 15.5 X 13. Anyone running this prop up at altitude? We still like to ski so i don't want to loose too much top speed. Any thoughts?