Looking at the pictures from the cont. awards (if I have it figured out) the Brazillian team look like they are quite tall, which is a great advantage in leverage in heavy air.Most of the top Austailian sailors were tall and slim and also sailed in heavy air lots.seeing as most world sites are locations were there is usually good wind I think it is very important to be good in big wind conditions.Also the Aust. sail with a large amount of mast rake .if you look at some of the pictures, the end of the boom is almost on the back traveller.They also seem to trap further back on the boat and use some shoulder movment to almost torque the boat over the large waves