A quick tip: with more than (3) anchor points, make your anchor positions non-planar. This imparts a constant curvature and thus constant tension on the membrane and goes a long way to stabilize its position in moderate to heavy winds. Or less flapping.
I have always wondered why awnings and similar covers aren't used more to shade buildings and keep them cool. It seems like the investment should pay itself off in reduced energy expenditures relatively rapidly.
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Balcon awnings Russian style (the land of no enforcement of building permits on small things) - full glass enclosures
https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQqEY5M...
some get very creative https://kvartira.mirtesen.ru/blog/43698892000/15-sumasshedsh... , https://masterok.livejournal.com/7601098.html?