Lame, but I doubt it is crazy inforced and most people just get asked to leave. That is my experience in BC anyways. Rule of the land is be respectful and leave no trace. If your trace is too noticable people will become quite irate. It may be public but a lot of the public here would rather that not everyone just get willy nilly about building paths wherever... because where does it end? How many paths can each person be allowed to build? I prefer some kind of rules that we all must follow on public land.