they were doing about 18-22 knots upwind and waterline length was between 110-130 feet. 1.34 * sqrt(110) = 14.1 knots. so like I said, beyond "hullspeed", ie. most definitely going faster than a wave of the same length as their hull. at some point, adding length for a given power will just add drag through skin friction.

Michell's slender body method works well for slender hulls, but these beasts may be out of the traditional bounds of applicability for the maths. even moths fall outside the range. ie. they are too narrow for what has been verified with this method. not to say it isn't accurate, just that it hasn't been tested and proven to be accurate. although that could've changed since I last read up on it.

sys F16 doesn't appear to have a bridle network with diagonal beams under the tramp, infact they say it is striker-less.