Depends on the size of your surfers. I'm 250 ish and with stock ballast it didn't do well at all. The wedge only seems to wash the wake out and doesn't really form it much at all. I have the power wedge and put it all the way down which only creates about 400 pounds of down force. If I pull it up a bit for more down force, it just kicks up a bunch of white water that isn't surfable.
I removed the hard tanks and put in 750's. Best mod I've spent money on! I can now surf with 2 people in the boat with no issues.
Malibu launch system consists of all ballast tanks to be hard plastic tanks. He pulled each of them out in the rear which hold 250lbs each (If I am right) and installed soft fat sac type bags that hold 750lbs each. Much better setup.
250 EACH SIDE OF REAR. YOU CAN ON A V-RIDE FILL JUST ONE SIDE. THERE IS A 500LB CENTER TANK STANDARD IF IM RIGHT. THE REAR TANKS ARE AN OPTION. SO TO WAKE SURF I FILL MY LEFT REAR TANK, CENTER TANK, PUT A 500LB FAT SAC IN THE FRONT BOW OR FRONT LEFT SEAT AND A 500LB FAT SAC IN LEFT REAR LOCKER. WEDGE DOWN AND THE BOAT SITS WITH THE ANCHOR HOOK AT WATER LEVEL. SORRY ABOUT ALL CAPS....
Yep, removed the hard tanks and put in a 750 pound Fly High sack.
For surfing I fill the surf side and the center tank and put the power wedge all the way down. If you want a nice long surfable wake, put another sack up front on the surf side. Too much weight in the rear will make a huge wake, but only a tiny sweet spot.