Hi Wouter.
Who are these guys? The lifting foil appears to be nearly horizontal, right? At speed the lee foil isn't doing a lot of lifting , according to your accompanying pic. Why not?

The Little America's Cup C-class Cogito has been actually lifted clear of the surface by their Bruce foils.... then they become badly frightened and sheet out, I believe.
Fortunately our smaller foil boats are less fragile (and less expensive) so we don't care, and continue on!
So what is next from Europe? Where sailing innovation occurs.