As far as I know, from experience, there is a small bracket that is installed at the corner where the small arm is located on the end of the awning to keep it from blowing out. An experienced awning installer can install one for you, that's what I did. Very inexpensive.
2002 W-22 266"wb, Winnebago Chieftain 39T, UltraPower, Koni's, Helwig bars, Nuvi 660, Sirius, Scan Gauge II, Sentry TM. 2003 LW300 Saturn toad, Sterling towbar & Apollo brake. And Hannah the Princess and Stevie the Dude!