hoop coops have collapsed from snow if not shaken off or have a ridge board down the middle.
I put a lot of vents on the south, East and below the roof ,above the roosts so they don't get a draft... just a little for winter on the prevailing wind side, for me that is N and W... good to have ones that can be opened when more humid on all sides
I've got three hoops and because of the framing inside I've never had one collapse.
I opened it up during the day and they birds were fine. It's covered with cardboard and feed bags on the back and fleece on the front. The tarps tend to let the snow slide right off.
This rabbit took shelter under the plastic.