I'm thinking about the same thing, Tenaya. On one end (head end), he has the pocket, just inside the channel for the whoopie sling. I'm not sure if it's centered. On the other end, he has the cord lock for the shock cord coming out around the same area as the whoopie sling. This makes me think the shock cord is tied off on both sides at the "head end," runs along both sides, until it emerges as a loop with a cord lock on one of the sides around the channel for the whoopie sling. I'm assuming there's a separate channel further in on the material than the whoopie sling channel, which houses the shock cord. I'm going to try it out now and see if I can get it to work. Hope that makes sense, I'll try to post pics ;)