> I had a camper years ago that had a commonly-available aluminum track that
> you simply pulled an awning cloth into that had a welt sewn into it so it
> wouldn't pull out of the track. Such an arrangement would be really good in
> winds, and would be hidden when the top was down.

The PO of my Syncro Westy did this.  The rail is still installed, since
it is pop-riveted to the roof.  It is completely hidden when the
poptop is closed.  I took some pix for someone a few years back:
http://jones.colorado.edu/VW/VWAwningRail/

I don't use it.  I have a roll-out equivalent of a Fiamma that I like.
Besides, I got only the rail when I bought the van.  No awning, so I
don't know what it looked like.

Richard