I also installed the tabs with lenco actuator and control system. (Homemade system) on my supra 21v I finally got mine dialed in after two summers and 4 different sets of tabs and about 10 different modifications. I am running a 18" wide by 16" long tabs with a pair of fins angled in the center of the tabs to get a good wake.
I like using my tabs but after using a suckgate I would not spend the extra money on the tabs. There were some at the ST Louis Mo boat so for $200 I think that would be the route I would take.