TA,

Wouter has over simplified it.

Statndard SI's forbid the changing of crew or equipement - changing config is both.

You enter an EVENT in one config or other. We have had situations (Mumbles 2007 is a classic example) where someone's crew cannot make part of the regatta, they register and declare this well in advance and then we, the sailors OK it (or not) AS IT IS OUTSIDE THE NORM. You could not EXPECT to get this approved, but you MIGHT. We are a friedly class!

I think if someone asked to do this on the first day of the regatta they might get a different answer!!, as it might be decided that they WERE trying to gain advantage, instead of using the flexability of the boat to get sailing.

In this case, Paul asked to do this a couple of months before the event was due to start!!! It was VERY windy when Paul was sailing without Anne and lighter when he was!

In a club race series, over 3 or 6 months, I think people would have to be very anal not to allow it. The ability to sail one or 2 up is part of the attraction of F16.