Other important info: - The Surfbent IQ Foil fits boards with a concave / recessed deck, like some Starboard IQ Foil & formula boards for example. - Note from the producer: The Surfbent is a good safety gear, but not a guarantee that you will not damage your board. In case of a very hard fall, there is still a possibility that the mast hits the nose of the board. But at least the shock will be obviously smaller than without the Surfbent. It is also recommended to use a tendon mast foot (which is somehow stiffer than a boge mast foot) and replace the tendon once a year to keep maximum stiffness.