This is an Interesting Race.......Sonar 23, and Santana's. You only sail the course one time in your own boat. Then all of the next races of the day.....you sail other peoples boats, alternating between Sonar 23 and Santana 20.

http://joetas.smugmug.com/Other/King-Series-Sailboat-Race/18982274_v7hZDW#1474271086_m9TZsDc-A-LB

Joe