Sailing with a foul bottom is hateful to us all, but how many would go to the lengths of these young Frenchmen to maintain performance. They’ve run a halyard ashore from the masthead, sorted out their lines and fenders, then literally ground the boat over so they can get at the bottom, and a fine job they’re making of it too. Everyone used to do this with full-sized sailing ships in the great age of sail, but back in today’s Britain, you’d have to post a lookout to warn of lurking health and safety officers. If your risk assessment didn’t stack up even to your own satisfaction, you could just heel her enough to get nicely below the waterline. What a difference even that would make.