Best I have found cost is $4 go get a bicycle inner tube , cut to same size as light slip it over the light ( this is so it does not hurt the finish on your bows ) Then cut 2 about a half inch wide or so and loop these together ( cut a bunch and keep them in your pack they work great for all kinds of things they are called Ranger Bands ) Loop one end on back of light place light where you want it on bow ( above and over shelf works best for ground blinds , below like pics is how I like it for tree stand and stalking ) pull around riser then over front of light. This works great you will get it easy with a little fooling around with it once set up it stays on target very well and takes about 30sec to put on and off. One tube will do many lights also will work on any bow and will not hurt your finish,,,,,,Sam,,,,,,,,