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
*KABOOM*

I just wanted to know how many tacks you made while going to windward on a "standard" W/L course

I weight in at 98-100kgs these days. In very light conditions I agree the lightweights have an advantage. In other conditions I dont care. The differences are not that large and in strong conditions the heavies gain on the featherweights. It all evens out over time and a making poor start is probably worse than carrying 10-20 kilos more than the other boat.
If one obsesses over weight in light conditions the race is already lost. Sailing is mostly a mental game (skill/knowlegde/attitude) so it is easy to lay the foundation for a poor race or even a poor season on the beach or while typing on a keyboard

I think we have had this discussion before so I'll leave it from here

(I am loosing weight these days but not becouse I want to improve on my sailing)