Ok...here's the deal. I'm still a jet-idiot (above all, the shoe is still the part that confuses me the most). I'm spinning a "B" impeller at 5700 rpm, and honestly with some more timing I have another 150-300 rpm left in it. Anyway, in my 21' Liberator with 4 people and full cooler (total passenger weight was 700-750 including me and the cooler was 40-50 lbs) I saw 60-65 mph at 5700 rpm. Maybe that's the "right" speed for my boat, I honestly don't know.
So...I'm asking for input both on what *should* my boat run with that load, and if it should be faster...how do I get there? I will add more horsepower in the future...but for now, lets assume a best case scenario of a "B" impeller at 5800-6000 rpm.
Here's a pic of my nozzle setup and ride plate, it's a 3-4* up angle.
Here's the underside: