Ooooh - you know you should pick up one of those night vision cameras that hunters use to see what is visiting a site. They aren't very expensive anymore - like $150 and if you put it somewhere inaccesible to the person that just got caught (high branch), it's likely that they will run when the light goes off rather than stay to look for the camera and destroy it.

OR, you could get a solar powered security camera that will just connect to your WiFi network...and see who is there when. There is one that Linksys makes that will email you a photo whenever the camera detects motion.

But you could just watch the movie Predator and get some good ideas for traps...

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