I was looking at those screens that cover part of the front of your fiamma roll-out awning to provide shade/windbreak at the Malvern show, and someone told me that shower curtains, hung upside down do just as well.
Apparently the weighted bottom edge feeds into the slot on the front of the awning, and elasticated loops can be put through the eyelets to peg into the ground.
Good eh? - I'm sure they must do them in pink (lol)