also... been saving the coins for a prop, the guy I talked to at Comp. aircraft is steering me to a 4 blade 48" old style ultra prop. It seems kinda small. I know Yamahauler is using a 3 blade 52" on his direct drive generac 992. I'm basically doing the same setup, but on a heavier fiberglass hull, also direct drive. The generac tops out at 3600, so I hope I can do without the reduction, Any ideas on size and blade numbers?