We got tired of awning flopping. We have awning screen that zips to awning. I use binge cords to cheap harbor freight plastic clamps. Then other end of clamp to handle of 3 gallon bottle. When wind gets to strong (or if I forget) wind will wiggle awning enough that cheap harbor freight clamps break free at handle. Once clamp breaks free, wind is strong enough that I pull awning in. Awning is never left overnight or unattended.
I also do this because a lot of places won't let you drive stakes in the ground.