Ok Im confused..
In the F18 rules.. Where exactly is the extra weight carried?
If its on the boat its static and provides less righting moment than a few kilos of lard.. Lets say the light crew has to add 50Kg to get up to weight.. The difference in righting moment is significant advantage for the heavy weight crew.. So the light weight crew is disadvantaged in all wind ranges.

If its on a crew in term of a weight belt its dangerous and tiring.. So a light crew would have to be stronger than the heavy weight crew.. As they would have to carry the extra weights personally and do the normal sail adjustments.. So again the heavy weight crew has an advantage..

So tell me how is this rule fairer?