I am experiencing the same thing with chine walk going from a yamaha to a merc. What I have discovered is, I was over trimming. It started to chine at about 68/69 if I was over trimmed. I’d bump it down until it was stable, then bump the trim up trying to adjust 1/8th of an inch or so at a time. I had to give the boat time to react to my adjustments before bumping it up more. I hit 74 without chine walking and still had more left before I had to back off. I need a few miles of straight away to reach max speed. I have an 06 puma, 8 inch jack plate, merc 250, and running a three blade 26 pitch fury, no holes plugged. I believe a 25 pitch 4 blade will be a better choice for stability and I’ll still be able to hit 75 or so.
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