If you search the forum, you'll find a number of entries on wake surfing. Ballast, speed, swim platform and prop all contribute to your wake. The normal scenario has you put more ballast on the side you'll be riding on - more in the aft (back) than in the bow (front). Aft weight creates the height of the wake and steepness while bow weight flattens it and makes it longer. On my 2002 SX, the starboard (drivers) side seems to create the cleanest wake for goofy riders (right foot forward on the board).
Here is my normal setup:
starboard internal ballast only 350 lbs (added a switch to isolate the tanks)
Fly High ballast in v-drive locker 700 lbs
Fly High ballast in bow walkway 400 lbs
Driver (more ballast than normal person;-)
Speed on Perfect Pass 10.3
I have a Acme 449 prop in Utah at 4,600 in elevation
Replaced my composite swim platform with a teak platform. Cut the corners on the teak platform to minimize wake interference