Modifications for other ballast systems

My ballast system is a two pump system to fill one very large main sac for surfing . It also has the auxiliary hoses to fill sacs on the seat, floor or bow.  This system can easily be adapted to fill 2 large sacs that are in both rear lockers. Also by building a manifold that has 3 or 4 main lines off of it (I used 1 “T” on the main water inlet/outlet so I only have 2 main lines.) you could also fill a center or bow ballast sacs.  This general idea can be adapted to many different set ups.