Free: Contests & Raffles.
Hate to say it but all they need now is bolt cutters.
There will always be ways a determined thief can steal your stuff, but most theft is spur of the moment, this should help a bunch. That or you will come back and find your trap damaged. I still think it's better than just setting it and making it easy for someone to walk up, pick it up and walk off with it. Good luck, I hope it helps!!