Joebuck, I invented one for my trip to Mongolia, where I thought we would be riding horses in the mountains(turns out I only rode a camel). I used a cheap padded nylon rifle sling that I bought on clearance somewhere for $2. At the ends for attachment to the bow, I used "toggle" straps, I don't remember the actual name for them, I got them in the camping dept., maybe basspro? All they are is a rubber band about 6" long made from a ring of inner tube, with a toggle or knob attached, that is 3/8" in diameter and 2" long, you just put band around the bow and the toggle throught the other end. They have no metal or velcro, so taking them off is silent. There is no permanent attachment to the bow, so you can change it infinitely or use the strap and toggles for something else.