I have trained extensively in Krav Maga and really like their sound self-defense principles and tactics towards modern self-defense in hand to hand and modern weapons (guns, knives). Besides things like Keysi Fighting Method, Kapap, Haganah, Marine Corp Marital Arts Program, and any militarized forms of traditional martial arts, I've observed that Jeet Kune Do and Kajukenbo seem to be the most closely related in modern self defense with Krav Maga. I've never had any experience with these Kajukenbo or JKD, but how do they fare in theoretical effectiveness as a street defense system? I've never seen JKD in action in real life, so I'm actually calling upon all those who do practice JKD and Kajukenbo to enlighten me. Just from what I've seen, surfing the web and such, excluding Paul Vunak's PFS, all other JKD instruction seem to be talking about using modified wing chun, energy drills and such. Do those actually work? Please, I'm only curious.