With big stuff/construction stuff like certainteed it'd probably be better for someone to seek out people who haven't heard of the lawsuit. Maybe post an ad saying they're a company rep or something, and then "perform inspections." Getting paid gets complicated at this point though. Maybe they'd have to pose as the property owners and get the rebates in their names and then issue their own check to the real property owner for a smaller amount. Or they might be able to weasel their way into some sort of contract, too, and basically charge a finder's fee.
I haven't read the certainteed one in a while, but I think they want to send an actual inspector to the house and then pay a repairman directly, so it'd get complicated.
