[tevake]

Boy howdy ^^
In the last Am Cup. It was the teams that mastered the foil bourn jibe that made it to the end of the series.
They were learning to do that during the race series.

I found it interesting in the first clip that I posted that they said the Japanees team had figured out how stay on the foil on thru the tack.
But once they had done it, it only took others a few days to figure it out .

Tremendous forces focused on the foils and their cases.

As the performance came up in windsurfers, we found that the standard fin box installation that came from surfboards just weren't up to the loads involved.
And we ended up doing a lot of work on the fin foils trying to keep them happy at higher speeds.

In the onboard video from the last Am cup races the humming foils could be heard clearly as the boat speed pick up.
I'm thinking they will have sorted that out by now.

Sail design will have evolved for the closer apparent wind direction and loads too.

Cheers Richard