Haven't been on the AT since the early '70's as a youth. Planning on getting out for some section hiking now that I may have some time available. From all I've read it seems everyone plans their daily miles to end at one of the shelters or other designated campsites. I am assuming it would be preferred to stay at one of these area to lessen the impact on the trail, but if weather moves in or I decide to cut the day short, is it permissible to simply stealth camp at any point along the trail?