The problem with being annoyed is that people don't generally react in a rational manner. I know that I don't. I've been lectured on this very board for spraying my garden hose into the open window of someone speeding down my street for example. Anyway, what might annoy a drone operator that may be skirting the boundaries of decency/manners, if not the law, but isn't permanently damaging property that potentially costs thousands? Would a paintball gun be effective?