I have a 2001 extreme stratos with a 225 Evinrude. With the stratos hull, u need to run the jack plate as high as can w good water pressure. A 26 raker was the magic prop. The main problem for the chine walking was the air in the hydraulic steering lines. I had 4 inches of play in the steering. Got the air out and the boat runs solid. No chine walking.