Triton SP185/Etec 90 Prop Question

Hello all and thanks for any help you can offer. I just bought a 2006 Triton SP185 aluminum bass boat with a 90 Etec on the back. The prop is an aluminum 13.25 by 17pitch. It comes on plane very fast and pulls very strong to 5500rpm BUT even at 44 on the GPS I can’t trim the boat up much at all before it starts porpoising and the prop just blows out.

The anti cavitation plate plate is very close to being even with the bottom of the boat. Prop to pad seems to be around 5.5 to 6 inches, motor is mounted on the second hole with no JP.

I can’t imagine this boat needs some fins on the motor! Is the pitch wrong? Is it the aluminum prop flexing? I’ve looked everywhere I can think of to see what props people run on this boat/motor combo but I come up with nothing! Ultimately I’d like to get a nice SS prop but this doesn’t appear to be an exact science!

Any help or recommendations you all can give will be greatly appreciated. Chris