I love my shade . I bought it to protect my new concrete in my backyard. We have black walnut trees and they are very messy and I didn’t want my new concrete stained. First time my husband put it up and a few days later after a windy day , it started to sag. Then my handyman tightened it also . Then again it sagged. I ask my gardener if he could tighten it and it’s been tight even since . The trick was instead of bringing it to the second loop on pole , he brought it back to the sail and it kind of looks like a sailor knot. I wasn’t here when he did it but he did a great job.