Take a look at the Vendee Globe 2020 boats - most of the boats in this Single Handed round the world race which started a couple of weeks ago are using foils. There is a great set of Youtube videos by Alex Thompson, a british skipper who has had to reinforce his boat which was starting the crack up - in the middle of the Doldrums (I think) off Brazil - these boats are entirely built of carbon fibre, so not simple to fix. Even more amazing is his ability to record videos while doing it. Alex Thomson Racing