Are you around 5000' above sea level? What prop is on it now?
What motor are you running? I have a 24 ZV19 with the 225XS. I am propped for 4000' above sea level with an Enertia 14.2x18P 3 blade SS. I found that when using Active Trim setting #5 I could only hit about 43. If I manually trim up from there, I got to 49.7 with 1 person, 1/2 tank of fuel, full fishing gear load.
I have not adjusted the manual jack plate but think I could get a little more out of it by raising the motor a small amount. For right now, I am very happy with the boat and performance. I am curious to see what it will do at Glendo on a calm day though.
Enjoy your new boats!