SpencerWM

2008 Avy Surf Wake... Full Stock Center Ballast Fly High Fat Sac 750lbs. in the rear locker Fly High Surf Sac 400lbs. on the seat up near the observers compartment 205lb. Driver 175lb. person on the surf side seat near the locker 165lb. person sitting between the other person and the sac Trim Tab - up Speed 10.5

I figured you could use 4 new Attwood Tsunami 800 or mayfair pumps (2 to fill and 2 to drain), 2 fly high fat sacs, all needed fittings and switches for about $500. You would need to buy hose clamps and 3/4" from home depot but that shouldn't be much more. It would be painfully slow to use the stock pumps to fill and drain 3 sacs. Plus you would have some drain pump prime problems. The other issue is that you wouldn't want all sacs to fill when surfing. You could use a valve to control what sac gets filled and drained.