When I was a kid, I studied Chinese Kempo, and I was obsessed with it. Part of improving was sitting down and reading about the techniques and concepts. One of my favorite subjects, was Bruce Lee's take on the trapping range, and how he integrated unarmed Kali techniques with the techniques he learned in Wing Chun, and made them effective in full-contact sparring. Even though I stopped training that art (recently started out in BJJ), I've always retained the interest in those concepts. So my question is, have you seen it used? How effective is it in "live" sparring? Can it be applied to a self-defense situation?