Kevin Gregory, from the Buffalo Canoe Club, wrote in with a question about a boat entitled to room to sail her proper course while at a leeward mark. As shown in the second diagram, Kevin, sailing a Beneteau First 44.7, was overlapped outside Doug, sailing a J/120, when Doug reached the zone at the leeward mark at Position 1. Kevin slowed his boat slightly and fell clear astern of Doug while Doug was making a sloppy spinnaker douse and a wide rounding. There was more than enough space for Kevin to slip in between Doug and the mark between Positions 2 and 3. Just after both boats had left the mark astern, but before they left the zone, Doug hailed, “Up, up!” to Kevin and luffed sharply above close-hauled. Kevin was able to keep clear as Doug luffed, but had to go head to wind to avoid contact. As Doug luffed above close-hauled, Kevin hailed, “Sail your proper course!”, but Doug continued luffing. Kevin wrote to ask me whether Doug broke Rule 18.2(b) or any other rule by sailing above his proper course.