THISTLE CLASS ASSOCIATION GREAT LAKES CHAMPIONSHIP JUNE 16-17, 2012 CHAUTAUQUA YACHT CLUB CHAUTAUQUA, NEW YORK SAILING INSTRUCTIONS ---- AMENDMENT No.1: 9 Marks: SI 9.5 is changed so that the finishing marks will be 2 – Orange round marks and a staff on a boat displaying an orange flag. Jim Tichenor Posted 6/15/12 at 1800 hours.