OK, with fall peaking around us, you aren’t the only one thinking about taking a hike. People who in their entire lives have never thought about taking a hike are likely looking at the forecast — sunny and cool — and thinking, “Hmm, I should think about taking a hike.” And that means the usual suspects — the Blue Ridge Parkway, the Great Smoky Mountains, Shining Rock — will be crawling with occasional hikers.