Iím thinking along the same lines. For my boat the weight isnít nearly as important as getting a good list going. We started having one guy tie a rope up high on the tower and then lean back, kind of like sail boat racing except we lean over on the side thatís close to or deep in to the water. My wake is much better when the surf side rub rail is in the water.
I think that adding left and right trim tabs should help. Iíve been thinking about adding a fixed trim tab under my swim deck to prove the idea out, but I wonít get it done this season, our last ride will be this evening.
The other problem that I see is that my swim platform starts to dig in to the water. I think that the platform is working against building a list, but not too badly. The platform also kicks up a little spray and scoops out some of the riding part of the surf wake. I saw else where on WW that someone was complaining about the small Centurion swim platforms. They might be small to reduce interference with wakesurfing.
If you add trim tabs I love to hear how it works out, good luck.