I like the revenge tactics you guys are bringing up. The trespassers deserve what they get.
How hard is it to approach the land owner and ask permission?
Not only that but if you are going to frequent the area at least clean your mess up.
Do what you gotta do man, they have it coming to them.
I wouldn't call it revenge, if I want to store a few roofing nails, or put up a well marked barb wire fence on an ATV trail I did not make or approve that is my choice as a landowner. Why should I buy hidden cameras, do police investigation and such, when dealing with someone not invited on my well signed private property? You have to draw the line however at causing possible bodily injury (piano wires across trails, etc).
A few flat tires can be repaired at a small cost and conveys a strong message.





















































