...I have an battery powered chainsaw. It's small, but is great for delimbing trees and cutting them up. Not big trees of course but a temporary shelter doesn't have to have big trees. I thought the trees the guy was using in the vid were a ot bigger than necessary. Good theory though. I had some concern about the flat roof. They tend to collect water and or snow.
Liberals are like a "Slinky". Totally useless, but somehow ya can't help but smile when you see one tumble down a flight of stairs!