Maybe you need more names - some local groundswell to bring to the law. If there's community concern beyond just yours, maybe that'll help.

My neighbor recently caught some kids jacking deer the Wednesday before gun opener. In their strange bid to sound innocent, they bragged about another kid who's even TWICE as bad. (A 17 yr old pathological redneck who leaves the carcasses in the woods. Doesn't take meat, nothing.)
So, armed with this kids name he goes to the cops and DEC. The DEC asked permission to patrol his land. They said they'd been tipped to this kid before, on account of how bad he is.
So maybe get some names together, draft a group letter.