This is how my 03VLX is weighted (currently).
Stock MLS (200 on each side in the back plus the 500 in the locker) = 900
Then I have a 600lb sac across the front seat (horizontal) and side sacs in the back (250 each)
That's 2000lbs of water, then the wedge which we use half the time depending on whos riding). When we don't bring alot of people we put another 600lb sac in the wrap-around seating area for an even...BIGGER wake
Takes forever to plane, so we usually do without that one.