I was thinking of trying to use a bivy sack as my shelter during my thru hike in combination with a poncho and my trecking polls to cover my face/pack and was wondering if anyone had any experience with this and would recommend/not recommend doing this. It seems like a good system but I wasn't sure if there are any horror stories lurking out there from other thru hikers. I'd hate to get a few days out and find out that it's a pretty terrible shelter for the trail