need ideas on props to try boat weighs 4800 lbs with 600 sci motor xr drive 2008 velocity 290 sc

ran 15x28 5 blade stock turbo precision 5100 rpm 78 mph on gps

ran hydromotive 15x27 5 blade lab 1 5000 rpm 76 on gps

ran bravo 15x29 4 blade stock 5000 rpm 76 gps

all test were in 1 ft chop 1/2 tank gas 2 people

what are your goals, top speed, mid range, holeshot, what max rpm are you looking for, it looks like you have aready tried some good props, was the hydro a P5X or a P5?
Larry

Customizing any of these props can get you closer to the WOT rpm of 5400. You will gain smoothness acceleration and some top speed.

You do need to determine your ultimate goals.