4ever, rick debbie gallant, I think that anybody with a long slideout awning will have the same issue with water collecting in the sag of the awning. I know that I did. I tried the beach ball with a string, but when it got windy I was chasing the ball through the campground, as it blew out. What I did was bought a 10 foot piece of 3/4 inch PVC and some T's and elbows and constructed a brace for under the awning. I did not glue the center leg so I can pull it apart for storage. It work great.
Peace
Dave