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My Dauntless 22' with a Mercury 200 is giving me some fits with cavitating in sharper turns. I usually cruise around 3800 RPm's at about 26 Knts. I have a Merc High Five 21P prop that came with the boat. All indications are that the boat is propped correctly, netting about 5,500 rpm at WOT loaded. I have no jack plate or anything and the motor is mounted at the factory recommended mounting holes. The river here has quite a few sharpish turns and it breaks loose and cavitates all the time. It is really bad if I try to do a quick 180 even at slow speeds. Trimming down before the turns does not seem to help much.

I have had good luck on previous boats with cavitation/ stabilizer plates. Anyone using these with any success? Any other suggestions? I am finding not to be a big fan of the Merc High 5 prop and may change that. Great hole shot, but horrible in reverse in this boat.

Any suggestions much appreciated.