I havnt contacted gw yet but I am next time there's a problem. I have a relative who's a cop that hunts with me sometimes I would love to.catch him or them when hes hunting with me. Here in wv u can arrest anyone that's trespassing on your property the landowner can. Plus its in his jurisdiction. I've tried the infrared cam they just shot it numerous times with a shotgun . It destroyerd the whole camera, card and all. Don't no how they found it I had it hid really good. Always thought about making my own gate so that I can make it impossible to shoot or cut the lock since I'm a welder. My buddy did this and hasn't had a problem since but it was a pretty pricey job. I no I'm going to be haveing more problems shortly since the turkeys are gobbling. I think I might try stakeing the place out Here soon.
Sounds like you need to out fox them...
https://www.google.com/search?ie=UTF-8&q=remote%20storage%20game%20camera Remote storage game cameras, as the name implies take pictures one place, and radio them to a seperate storage unit. They can stand there and talk smart and think they're actually accomplishing something shooting the game camera, but you will be building charges on them all the while for that too, with the memory card full of pictures, safely someplace else. And, if you win in court, you can seek to recover costs of your camera in settlement. They aren't cheap, but it sounds like maybe you're to a point of principle and seeking satisfaction.
Or, you could do cellular game cam, and that one can be set up to send to your cell phone when it's taking pictures, and you would be alerted when they broke in. In that manner, you could quick call your police relative hunting buddy, who probably has connections in law enforcement, and you guys could catch them in the act. But, that one is a little spendier and you have to pay for the phone line to boot.
https://www.google.com/search?ie=UTF-8&q=cell%20phone%20game%20camera Spiking the road is an option, but usually someone that doesn't deserve to have ruined tires gets caught up in that too. Down here they use pole barn nails, insert them about half the length of the nail into a piece of half inch conduit about a foot long, then take a hammer and beat the conduit flat over the nail. Sharpen the leading edge of the nail as suggested above, then pound into the road.