I just called one of our vendors and they hooked me up with a 6 x 6 sq. transparent red arcylic x .125 thickness. They said it will do nice job putting a nice red beam out. You may want to try calling a place like that. I am located in Round Rock, just north of Austin. Regal Plastics - 512-836-3629.Ask for Donnie. If they do not have anymore drop they will cut it for you. Just measure the O.D of your light and add 1" So, if your light is 6 in. DIA. have them cut 7 in. Drill two small holes one at 9 and 3 o'clock and use a small bungie cord to attach it to your light. I have rigged mine up, seems to work pretty well. This weekend will let me know just how well it really works on the YOTES. That for your reply. I hope this works out for you.
Spotter