MascotRejct

Hey guys, we just got a new to us boat, and i'm having trouble finding info on this forum about Ballast capabilities for an 05 avalanche with the walk through transom. Any idea what the biggest bag I could stick in the starboard locker is? The boat only has the sock center tank on it. I don't mind filling with an external pump, just don't want the bags sitting around talking up usable space in the boat. I plan on using a mission Delta on either side, so I'd like to keep it evenly weighted, plus that way I can run the bags for both boarding and surfing. Also, wakemakers says they sell a dual 720lb system for the avalanche but that seems like its way too big to fit in that small locker... Is that really the right one? Any help is appreciated!