irrelevant really either 1 or 3 in course racing upwind , praps same down wind point was that fattys have to get these spot on to gain any advantage over lightweights going faster and hoping the tack gybe in wrong places ,times or badly executed.

I weigh 118kgs , average cat sailor is 75kgs (according to schrs ) try carrying that difference down wind in any wind SCHRS roughly equates 10kgs of "boat weight" to a performance advantage/disadvantage of 1% approx , schrs formula is considered to be pretty good at assessing these differences .

118kgs = 260 llbs
75 kgs = 165 llbs
10 kgs = 22 llbs