After filling any factory ballast and FatSac that fill the front and rear compartments of your V-drive boat, put the Ultimate Wake Surf Sac on top of the rear seat and side seat that you are wake surfing on for the ultimate surf wake. This will displace so much water that people will no longer have to learn to wake surf behind your boat they will just be able to do it. Be sure to remeber to give the boat some throttle to bring the front of your boat up enough when passing thru any wakes you are making so you dont swamp the boat with thetsunamis you are creating with this sac setup. Will also conform to fit in other type boats and in other places.

IMPORTANT NOTE: Hold this sac up on the seats when filling & emptying it so it will not roll off, but when it is full it cannot roll of because of its L shape.