Figure six foot lock
From Silkworms
figure six foot lock:
(needs photo)
i'm not sure how this is tied in the air, or used; i've only seen it in a demo video comparing foot locks. included here for completeness.
starting from the tail, the fabric passes over the top of the foot from the instep side, around the ankle, down under the foot at the instep, and back up.
links: this is the first foot lock shown in this facebook video

