My wife and I are looking to try out winter bags on out trip home from pa. I thought it would be ideal to pack our packs and hike a short distance into a nj or ny shelter and stay the night this weekend. Does anyone have any reccomendation of a nj or ny shelter that would most likely be empty (want to pitch tent in shelter for extra protection from elements) and close to the road as we want to be out quick Monday and will not have much time to hike in Sunday?