[flyingfrizzle]

Once I got my secptre 20 up high to the best mounting point for performance I had some blow out in sharp turns as well with a 3 blade mercury vengeance prop. I went from it to a rev-4 and it got way better. The rev-4 is a simi-surface prop and it has the cup to handle the higher mounting height. You can go back down one hole too but then you will be giving up performance. The mercury mirage props have better cupping than most others also and would help if you wanted to stay 3 blade. Just remember a rev-4 19P will RPM like a 3 blade 17P, so if you go to the rev-4 you may want to run one-two pitch sizes up unless you need the extra RPMs to get you up towards your redline of the outboard.