How to attach a camera/GoPro to a canoe with a skirt?

I just got a beautiful North Water Skirt for my Clipper Tripper canoe. Previously, I made a device to hold my camera to the stern thwart ( a steel gooseneck welded to a steel clip) Without the skirt, the system works fine. With the skirt on, there is nowhere to attach the clip.

Any ideas?

thx.