I just got my new Benninton Tritoon, it is a 2021 20SLG, it has a 115F Yamaha four stroke motor with a Yamaha 13.5x14 three blade prop. I am half way through break in period for motor so I can take it to WOT, but not for more than 5 minutes at a time. My question about performance is, I am getting 28mph at 5800 rpm with 4 people on the boat and full fuel tank, bimini top was not up. Does this seem about right or should I be getting better? Any advice or experience appreciated, especially with prop suggestions.