If I lived in this town, and this shit was happening, I would make it my life's duty to fuck up every single board member's daily life as much as possible for the rest of my life.

Five years from now? Oops, someone slashed your tire. Again. Wonder who that was?

Ten years from now? Someone keeps smashing up my Xmas decorations. It happens every couple of years...

Twenty years from now? Jesus! My car was keyed for the fiftieth time this century! And who keeps cutting my cable cord and driving over my lawn?

EDIT: Even more creative and devestating: I'd start immediately digging into their personal lives and affairs. See who's cheating on their wives, who has some dark secrets, who has some troublesome relatives. Then I'd just start a public campaign against them, smearing them with every dirty thing in their life that tarnishes them even slightly. Maybe break up a few families along the way. Maybe a few arrests even!

Fuck them right into the ground, never halting, never resting, until they are ground into dirt.