I really like the sound, or maybe even laser light, idea to do this as a club function or event. The sensor could be plugged into a channel and used to trigger various options on a plane, such as releasing confetti, or have a sound and/or light module go off, etc. What a great idea. There wouldn't be any need to make a whole new set of rules for it either. It would be great at club events without any added dangers. They could even have safe AAA war simulations and such. If the market would be viable, it would also be another product for the R/C industry to capitalize on. All positive stuff I think. The guys that really want to have a blast actually destroying a plane could just find a secluded private area where nobody but themselves would be at any risk and the responsibility would be solely on them.