RE: How to keep out trespassers?
Uh, call the gamewardern and prosecute them for trespassing. Grandpa may have to appear in court to make the charges stick but if you really want to keep them out I don't know what else you could do. I would have had them locked up when they pulled a gun on me, that's a far more serious charge than trespassing or poaching....I'm just sayin'