mph

I have a new 2016 Bennington 20s with the Yamaha 50 high thrust. At WOT I'm stuck at 4700 RPM and believe I should be at 5700-6000 RPM. Prop is 11 pitch.  HELP!

Hi everybody, I just purchased an 08 2575 RLi with the ESP and a 200hp Optimax. I was curious what I should be seeing for top speeds with this setup, I currently have a 4 blade 14 3/8 18p Apollo prop and see a top speed of 28MPH at about 5000~ RPM with 6 adults on the boat. Does this sound...