Final Ballast Questions

[mainelaker]

OK, so I just need the final input on my ballast system before I start the install. I am installing into my 2003 Hurricane. So far here is my parts list:

Fly High Integrated Bow Sac under front seats
Two Fly High rear sacs in lockers
3 Tsunami 1200 fill pumps on a manifold
3 Tsunami 800 drain pumps, one on each bag
3 swing valves
3 Contura rocker switches

Now, I am confused on a few things. Do the swing valves only go into the fill lines, I think so? I have three outlets in each bag so should I do a vent line? My thoughts are one fill line, one pump attached to the bag for draining & one vent line so I know when the bags are full. Should I skip the vent line so it will burp past the drain pump or is it too risky. I don't mind adding the additional vent line if it will make the system work better. Do I need to add more swing valves to the vent lines? Finally I will need to add a thru hull to fill so I am thinking a big scupper to make sure I have plenty of volume for the pumps to pick up out of the manifold, make sense? I will be making a manifold ala Wes Gardner & will install a manual shut off valve similar to his in case of emergency.

[wesgardner]

Swings go in the fill lines...
You MAY get away with no swings in the vent lines...I don't have vents but would like some....my sacs only have 2 outlets each...
I just have an 1 1/2" thru-hull for an intake...works fine