Vibrations while Wakesurfing?

Last couple times out i have noticed a slight vibration i can hear and also feel in the floor while wakesurfing. The boat is a 05 Mobius LSV with 230hrs, Maintainance that has been done are oil changes every 50 hrs, and i replaced the impeller at 195 hrs. I run 450lb sandbags under the bow seats,450lb sac in the ski locker, and 750lb sac on the surf side. With as many as 6 people in the boat. Does anyone else get vibrations like this? Is it just the pressure from the prop trying to spin up so much water, my rub rail touches the water with this setup.

Sounds like cavitation.....the prop may be catching air from the non surf side of the hull due to the list.

Mine does that too... I have a '99 SSV. It feels like cavitation to me. It's kind of disconcerting, but hopefully it doesn't hurt anything.

I was also hearing the same noise, while i was pulling someone on the tube. 20-30 mph, cutting the wheel back and forth, and it was very choppy. I hope its just the prop catching air, and i am not doing damage from so much wakesurfing