as decent video of the last cat racing in the olympics seems non-existent for most of us i went back to watch the most recent "best tornado video", the 2008 takapuna worlds, http://au.youtube.com/watch?v=qy4yZOgvL-Q, (make sure to click high resolution and full screen at the bottom right of the video)

i notice at 31sec､ 2.21sec、3.08sec, 3.48sec, 4.27sec, 5.32sec、and 7.04sec that when going downwind on spinnaker that the crew? is as far aft on the wire as possible and the helm? on the tramp and steering with the rudder cross bar, the extension has just been bailed out behind the boat and is bouncing along in the wake

just a few noob guesses here but i suppose this means

1. that with the crew so far aft there really is nowhere else to put the rudder extension

2. that this is something only done when the wind is strong enough to support 1 hull up with both still 2 on the windward side of the boat

3. that tornados don't use extending tiller extensions, just fixed length carbon tubes

is that right???