I would go up to them calmly. Ask them if they had seen anyone out there in that area or know who may have done this. Then tell them you had a game cam set up (35mm takes longer)and it waspointing pretty close toward your stand or what ever trail you think they had or may have had to use.Just have to take film in to get developed or waiting to get them back. If you get pics of the people who did this, you are going to police. Unless it is returned asap then no question asked. If it wasn't them you can always say later that no pictures of who did it was caught on film[&:]

Then really put up a cam to see who brings it back...