Originally Posted by mummp
rules do not allow use of the windward foil, I do remember reading something about exceptions (rule 47.3)

Here is the skinny on rule 47.3:

47.3 Preventing windward daggerboard increasing righting moment
After starting, an AC72 yacht shall have the windward board draft stripe(s) visible so to
confirm that the board is no more than 0.500 m below MWP, unless one of the following
applies:
(a) the windward board does not penetrate the surface of the water for more than 15
continuous seconds;
(b) the yacht is within 300m of a mark;
(c) the yacht is within 30 seconds prior to and after tacking or gybing;
(d) the yacht is sailing less than 15 knots;
(e) the yacht is sailing at less than 90% of its performance relative to the other yacht(s);
(f) the yacht is taking a penalty.


Philip
USA #1006