the difference with the wavemakers system is the tabs themselves. you're not going to get a great wave just by adding trim tabs. if i were you i'd modify the trim tabs after looking at the various designs out there so that they do some water diversion. supra, moomba, mastercraft gen2, wavecontrol--they all have strategically placed fins and channels to divert the water away from the surfer and that's why they work better than slapping a trim tab on would.
'88 Sunsport, 2250lbs ballast, automated surf system, home made surf exhaust, surf flap, ACME 913, Krypt 6.5 HLCD's, Perfect Pass Stargazer
2007 Centurion Typhoon to be upgraded this winter!