I have a 2011 P2, with a 200 Pro XS and a 25P Trophy Plus (4-blade) prop. Once I hit 61-63 mph it starts to chine walk. Ive tried to push through it like people say but it gets worse and I get scared and back off. Ive driven boats for many years, but Ive always had 18 footers with 150HPs except for one other 19 footer which never had the problem, so its really never been an issue.Is the 4-blade prop part of the problem and would the 3-blade make a difference? Any help would be greatly appreciated.Thanks.Last edited by Cassbass on April 7th, 2013, 6:23 pm, edited 2 times in total.