Macca... didn't anyone ever tell you not to hold your mainsheet with your teeth?
I've heard of a butt cleat, (sitting on the line); foot cleat (stepping); Knee cleat, etc. Now I've seen the correct technique of the 'teeth cleat'!
NIce video, on one of the quick snap shots, ya'll were getting the lee hull up double trapped, then it cut away just as it was rising.
