thanks tim, so i was in the right at the nats

(b) If boats are overlapped when the first of them reaches the zone,the outside boat at that moment shall thereafter give the insideboat mark-room.
If a boat is clear ahead when she reaches thezone, the boat clear astern at that moment shall thereafter giveher mark-room.
(c) When a boat is required to give mark-room by rule 18.2(b), she shall continue to do so even if later an overlap is broken or a new overlap begins. However, if either boat passes head to wind or if the boat entitled to mark-room leaves the zone, rule 18.2(b) ceases to apply.