I haven't but I have a thought. How about quilting one squiggly side from edge to edge and then coming back and quilting the other half? It would help to draw a diagram. Like this: mmmmmmmmmm and back with wwwwwwwww but pretend that they are the right shape instead of ms and ws.
mmmmmmmmmm
wwwwwwwwwwww Of course, they would meet and not have the space between them. Clear as mud?
I have to say that I love your heading too. It showed up as ever quilt a chicken on my screen. Made me smile.