2003 Parker 2120 prop recommendations.

[mhyser2120]

I have a 2003 Parker 2120. It has a 2003 Yamaha salt water series 2 0x66 150 HPDI motor on it. I'm looking for prop recommendations. The current prop that's on it is an aftermarket 3 blade Mercury one, And at full throttle I'm only seeing 4400 RPMs. The boat still runs great and averages about 31 to 32 miles per hour with medium load. I was wondering though if I go back to a Yamaha prop if I would gain performance by getting up around the 4900 to 5000 RPM. Any recommendations or advice appreciated. Thanks in advance.