great idea if you don t have someone thats already using it ,,an knows how to leave no sign...no
changes in electricity use etc...as to cameras great idea unless they are discovered ,,then somebody just gets free trail cameras...you may know someone you can trust,, who would live there an watch the place...
if its as you describe theres not gonna be any help from the law ..he will have to be willing to be an enforcer himself... which means he has to be able to sense when the fox may be around,,an take necessary measures...jmo slim..