Nice article, my recent travels up the east coast allowed me to see the damage done by Hurricane Sandy to many areas. One thing that caught my eye were several hoop houses that were mangled messes due to the wind. As the article suggests and also if you look at any large scale nursery supply houses, they mention the need for a strong center rib or pipe and strong frames in the ends, and wind breaks. I use PVC low tunnels for my tomato and pepper rows and i get about a 4 week extention on the season.