I do use some of the 7 games when I'm working on ground work, but all I have is a rope halter I was given, a homemade "Parelli" leadrope and a lungewhip. Not a huge fan of Parelli himself, but I just do the games once in a while to help me bond with my horse.
I do like Gawani Pony Boy with the Native American Horsemanship. I have a DVD of his, and using his methods, combined with the 7 games, really works for my horse and other horses I work with.
I don't "follow" anyone, I just have books, DVDs, and read different things and combine them together and I get a really good result with the Joining Up process and things like that.