There is a new aftermarket system out that almost looks like a Gen2 system. At the end of the tabs it has a layered part that lets water flow through it. For the life of me I cannot remember the name.
I had them installed a couple of months ago on my 2006 Supra 21v. It is a night and day difference. I posted some pictures of the wave in the Wakesurfing section. If you have any questions feel free to ask.