Look online for a GPS transmitter, some thing small and put up a trail cam with it hidden inside and padlock the cam or just make it hell to open. if you're willing to spend the cash. Then, hunt them down with the authorities and get them charged and tell the police what other gear had been stolen and i'm sure there will be a search. I'm guessing they probably don't have a camp since they think hunting private property without permission is a good sport. I'm just assuming they are since they are stealing your blinds and cams.