Never heard of that law Mike. In pa.All land is assumed owned by someone.and even if it aint posted you cant trespass.They teach that at the states required hunters course to get a license. I see your point,but it just wont work that way,here anyway. If someone has say 50 acres and it is not posted I bet 25 people would show up on the property on opening day. With cars parked all over the shoulders of the road causing accidents.