Tom, rumor has it that the MMDC (monterey metal detecting club) is operating secretly on every last Thursday of the month at a local fire station. The secret society chief objective is to avoid paying your tax. Much like the Kennedy's bootlegged Rum on the East coast to avoid paying tax on illegally imported booze.
How much longer are you going to tolerate this illegal behavior? You had better stop this be fore it spreads to other California counties.