Every year it is a scramble to figure out how to best protect tomatoes from the first couple of frosts. I like the system I worked out this year, because it is a quick procedure to run outside before dark and make sure they are covered up. The tomatoes are trellissed on rigid fencing called "ranch panels" that we bought at the local D & B Supply Store. They come in 12 foot lengths, but they will cut them for you at no charge. So we had it cut to fit our raised bed and put T-posts deep into the ground to support the panel. Now, when frost threatens, I get my trusty clothes pins and pin sheets to the panels. They hold up very well. Previously, I had a problem keeping the covers on the tomatoes if there was any kind of breeze, but the ranch panels are sturdy and the clothes pins won't let go.