Hmm. I`d like to see Bethwaite on a 49er in 25 knots in a lumpy sea. I`ll bet he tacks on every windshift while trying to remove his underpants from his head.
Contrary to his beliefs, those cat sailors who tack often up the beat always get there before the guys who sail layline to layline.
Time spent upside-down on a skiff does nothing for vmg. Perhaps he can add another chapter to his book while clinging to the centerboard.