I built a cover over our deck so we could do more outdoor entertaining. I'd like to add some kind of simple, retractable protection on either side so we can keep out light rain and wind when they occur. I am open to ideas, but at the moment I am thinking a hand crank roll-up shade, or possibly a deck screen that mounts on the post and retracts sideways. It has to be at least 8 feet in height and 6 feet wide (or a pair of 3-foot-wide shades). There are so many products online I don't know what to choose. Recommendations?