Do you include a tent and sleeping bag with your BOB, at least for winter season? I added them to my BOB recently. I went from 28 lbs to 46 lbs. I had just an emergency bivy space blanket style, thermal blanket/tarp combo, another tarp and some more space blankets. Yes it weighs a lot more but... I've spent the night in the mountains in the summer time wrapped up in a space blanket with a tarp backing because that was all I had when I lost the trail in the dark, just what I had in my pockets. It was uncomfortable overall but OK in that weather. I'd sure hate to have to do that in the winter though during a bad storm...And improvised shelters take immense time to build, time you don't have when on the move and they still are not as good as a tent in the rough PNW mountains. Hence why I decided to add the tent and the sleeping bag. I know some will balk, but how often have you spent time in the bush when it is pouring down non stop rain, windy, cold, etc.? I go camping in the winter when it's pouring down rain, snow, windy as all heck or bitter cold. The tent and sleeping bag make it possible, and I'm not even using a four season tent, just an el cheapo special, but it works well. I'd hate to be out there with just space blankets and a tarp in the winter. I actually plan to bug in primarily, and if I do have to bug out, I'd use the car to take me as far as it can. Even if I do have to carry it, I'm athletic and have done 14+ mile hikes in the rain with a pack in rough terrain. Yeah, I'm not in my twenties anymore but if I had to I could do it again.