To protect us from moisture I cut down a couple of pine trees and used the branches with the needles to act like shingles. Then later we cut a bunch of palm style yucca that actually if we had more time would have been great to use instead of the pine branches. The location of our shelter is at the opening of the woods and a couple of feet down a hill. We wanted to use the woods and the hill as a wind break.
I always get people who tell me we are crazy for spending a night in the winter with no sleeping bag and just our survival pack. Then I hear stories like the one below and I thank god for all the things people have taught me how to survive. If I am ever in a survival situation I want to be prepared as possible.