I am starting my last ballast project on my '08 Supra. I am adding a seperate vented line for each bag. This will eliminate the air pockets forming in the bags when filling. Especially the front sac. It will also aid in draining them, eliminating the "vaccuum" effect when water is being extracted from the bag. Another plus is , when the bags are full it will allow water to exit and eliminate excess pressure that could cause damage to the bags.

Its a pretty easy project, assuming your bags have an extra capped off port in them. I am adding a quick disconnect in each bags extra port (currently plugged off right now) that will tie into the drain line near the exit hole of the boat. There will also be a one way check valve I install to eliminate water from coming back into the bags while draining them.

I will post some pics when I am finished. Total cost of this project with all 3 bags is about $125.