Hmmm that's a tricky one, but at least for the past 4 years under the current rules we've still been applying tactical and seamanlike in the room and on the water. Maybe I'm smoking crack but if 2 boats are overlapped on starboard, and the overlap was established by the boat originally clear astern, the inside boat has room to make a tactical rounding and the outside boat cannot luff her above her proper course. In team racing the otuside boat would gybe twice quickly to re-establish overlap but the inside boat can still make a tactical rounding, the outside boat now has room to take the inside boat head to wind past the mark and let their teammates slip by. That is my understanding, hopefully I'm not wrong...