RE: Trailcam Locking Systems
How can you leave hard earned money on public land? I doubt it was even a crime in your state for someone to take that camera. The public land I hunt it's against the rules to leave property over night in the woods. I wouldn't even consider chaining it to the tree.
Your answer is simple - don't put the camera on public land. Find a land owner that will let you put a camera up, promise to give them a copy of every picture. You should be able to find someone to take you up and it would get your son involved.