By now it is a known fact: the deployment of foils, hydrofoils or immersed wings is currently revolutionizing the sailing yachts’ world and more generally small sailing craft as well. We’re not just talking about foils that allow boats to rise off the water and to ‘fly’, much in the same way as competition models taking part in America’s Cup races and more. We’re talking about those foils that are ‘hidden’ below the water and change performance notably while avoiding the dangers related to ‘flying’!