Wouter, what class are you talking about that does not allow the crew members to switch off on the helm? Rick says the only multihull class he knows of that does not allow it is the F-28R, and that is because they don't want the owner bringing in a ringer to take the helm.

When Rick and his son were switching off on the helm in the Tornado class, somebody protested, and the jury refused to even hear the protest, saying there is no such thing as skipper and crew, there are two crew members on the boat, and no rule to prevent them from doing any of the crewing jobs on the boat, which include helming, or from switching jobs during the race.