I've been inspired by the epic Taco Bell Takeover video and am thinking about pulling off a similar stunt at my local fast-food place. I do have a dual-band handheld that is "wide open" and a scanner with signal stalker to make it easier to find the frequencies they use. Around how long could I safely pull something like this off before knowledgeable people start looking for me? There are a lot of active HAMs in my area, and I'm not sure how eager they would be to track me down if they got word of it.