At gore 11-12 years ago we were smoking in the woods a bunch near our first big jump. I wanted to hide away a little bit since I was working there. I decided to build a wall, yeah that trump fucked stole my idea.
Anyways just started with a bunch of decent stocks/small logs between trees and started weaving in pine branches. Decided why stop at one wall. Then started building one on the other side on the off chance anyone could kind of see you from the lift.
Then, why not a roof? Some slow midweek days made it easy to throw in sometime. Ended up with an igloo shape ish hut with a from and back doorway that extended out so you couldn't see inside even from right next to it. Fit 6-8 people comfortably. Ended up surviving several freezing rain storms and I think it was still there a few years later even with no screws/nails, or any upkeep and maintenance after we all went to other mountains.
If I ever built another I'd probably go similar.