My buddy has a 2019 z20 with the new 250 proxs 4s.
It gets a little loose at around 68mph.
I think he could come up a little on the plate.
Current specs.
25p fury 3
P2P is about 3.75
RPM is about 5800 at 70
I believe it is a 12inch slide master manual adjust.
H2o pressure was good.
I am thinking taking he could go to 3.25. But being a fury i know they like to run lower.
I with i could throw a temp+ or Bravo on there. But he is not going to buy a prop.
He one of those guys that does not care really about setup.
By the way...those z20s are are very nice boats. One of the smoothest rides i have been in. The only water that got on me in less than ideal conditions was water from the trolling motor prop when leaving a spot. And the merc 4s is just WOW!