Thanks for that. If it's 'merely' the foil profiles, then it's a quick job to do that, within the constraints of how many foils they are each allowed to have. But this will completely change all the control software, which takes time. They've already had glitches out on the course. That's without mentioning the possible buoyancy problems at the front.
This is going to be tough, really tough. 15th January is not that far away.....