I just picked up a 2012 vlx last year. The wake is def surfable. I have front center and rear (side) ballast full with wedge. If you have less than 3 people in the boat you will need extra ballast in the rear. We added a 600lb and surfed great.
The Malibu Surfs fine, if you want a big wake with less weight then as suggested look to the Enzo 211. Malibu has a good surf wake, yet the flat hull in the rear causes it to need a lot of weight to great a big wake with lots of push. There is a great video of a 2013 with surfgate and it shows a great wake, however there is so much extra weight in the boat all across it to achieve the wake with both Surfgate & wedge.
MLS full except non surf corner, custom "enzo" style sac in the corner and up under the seat, 450 on the seat and 450 in bow, wedge all the way down to a couple clicks up. Speed about 10.5 in this video. Also this is with just a driver in the boat, you could definitely exchange some people for all the sacs on the seats.