what is illegal about creating a barrier to entry to your own private property? If that barrier is perceived (like a sign that warns of toxic waters or rabid animals that keeps people out) or physical (like a simple gate or tall fence), or seen but potentially dangerous (like barbed wire on top of a fence or spike strips?)
Isn't the beware of dog sign (which works by nature of the fact that they can't see the dog but likely he is there) similar to a beware of spike strips (also unseen but probably lurking under the dirt where they would have to choose to drive over them or not)?
I don't think anyone would get injured, although possibly if they were going very fast on their dirt bike and had a flat tire something could happen, where is the legality when damage occurs to their vehicle while they were trespassing?
