Prop Help
 

I have a 89 chaparral villian 4 30 foot and was looking for some prop input. I have twin 502's merlin ported heads and intakes, gil exhaust, not sure on exact hp but guessing mid 500's , any ideas on prop for this boat-engine combo?? bravo drives w/ nose cones

Probably start with some 26 or 28 Bravo 1's and go from there. You can use BBlades test program.