These guys are good and they obviously put in a lot of time to practice on their specific boat, so they know how to make it go in varied conditions.
Not quite the case: Hugh Styles borrowed my Infusion for a light wind weekend before he flew out to Aus, thats the only sailing time that he had on one! Not even with Tom crewing. impressive.
I can confirm that the infusions at the worlds were straight out of the box stock boats.
P