i can see where your going 80%, but that boat sail effect has some major issues since i'm a light frame myself, and any holes added will give me lift, not go straight through. fraking stunt-kite. i should just do that!
I have chicken-wire. which is softer and lighter than my prefered square mesh, though more of a shit when it comes to the edges.

But you say i should do a 'fairy wing' wire frame. the word 'wire' didnt come to mind last time and i've been stuck on the technique for a while. Stoped by lack of word in planing stage! Can you believe it?!

Oh i don't know where to get a big enough stocking to cover that wire!

Oh scary! A breeze - an example
[IMG] DSC00741 by TyranidKisses, on Flickr[/IMG]