Ok here is the problem. We have a beam hanging across the stage about 8’ off the ground. We hang things on it at different points and it works very well. The problem we are having is one change we have a door way we bring out and hang in pitch black. We have tried spike tape and glow tape. The problem is there is not enough glow tape and in the dark there is not enough light to see the white glow tape on the black surface. So what can I put on there that is as bright as glow tape (no brighter) but does not require an extension cord? Thanks so much.