I got some at Dick's but I couldn't find a good way to rig them. They were more like resistance "strips" because they didn't loop around, but they came with a little plastic clamp that could be used to make it into a loop. So I tried doing that and doing a slip knot, and it worked great for like a day but the plastic thing snapped and almost killed me and my girlfriend. Part of it got lodged in the drywall, and another part flew across the office and shattered one of our blinds. So what's the best kind of resistance bands to use and what's the best way to rig them?