I carry a standard military issue nylon poncho with me when I hunt. Besides rain protection, it makes a little tent, a ground cloth, burrito wrap, or a personal windbreak/shelter worn over the coat. Folds almost flat, and slips right into the game pouch of my hunting vest/coat. If my DW is with me, she carries one too. Snap them together for a pup tent and a romantic evening by the fire.
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The man got the powr but the byrd got the wyng