My buddy has a Super V27. We are having some issues with tunning it in. What prop would be good with this set-up:

Motor:HK 3660 3060kv
ESC:Seaking 120Amp
Batteries:4000mAh 30c 2s or He is running 2200mAh 3s not sure the C rating
Current Prop:x442

Boat seems to be cavitating. Not sure if its the prop, or strut angle/depth.