just had a simple idea for curtains ... Hook a bungee cord in a hole , run it up the rib into another hole , across to the next rib and down ... Instant curtain rods , and you can easily take them down to wash at the end of the season ...

How easy is that ?

And if someone accidentally grabbed the curtain ( as in falling, tripping over the dog) The whole thing would flex and stretch rather than come down as with a regular curtain rod. Camping curtains ...