I've seen em just tied off to the cable also. I'm sure the prongs drop fast enough. The guy at the shop was shooting a BK II that had this mod. As for connecting the string to the rest it looked like the fella had just screwed one of the "upper" of one of the screws on the bottom of the prongs. If that makes any sense. He used what looked like a long piece of camo string loop type material. Let me know how it turns out. I think I might try one out myself.