Timeshare presentation search engine?

Timeshare presentations don't even faze me anymore. I've already been on seven, mostly to get free or very reduced weekends at hotels and whatnot. It's easy to get through them at this point m

I'm thinking that I try to sign up for timeshare presentations at places I want to travel to anyway, and try to get the discount hotels. Does anybody know if there's a specialized search engine or something, not Google, to find some presentations in specific locations I could sign up for?