We have three raised beds with simple PVC hoop housed built over them. I have agribon floating row cover secured over the hoops to prolong our growing season (we’re in zone 7 at 2000’ in Grass Valley, CA). This is my first year trying to garden through the winter and our little hoop houses received their first BIG test last night when we received about a foot of snow. So far, so good…. all three hoop houses are still standing and the snow is insulating the rows. I’ve since brushed the snow off the top.