In the world of automobiles, everyone knows about the “trickle down” from racing, where knowledge earned on the racetrack winds up on family cars in areas from rearview mirrors to tires. This happens in yachting too. America’s Cup gear ends up on family sailboats, and design data from racing powerboats improves center-console fishing boats. Now there’s a new “trickle down” from the world of bareboat charters, and it’s to benefit the buyers of power catamarans. The bareboat charter business is tough because, during peak season, turnaround times may be just four hours between one client stepping off and another getting aboard. That doesn’t give much time to clean and wash the boat, let alone fix things that may have broken on the last trip.