Cool article about a poster for the America's Cup David Michael Beck did a while ago in Cruising World.
Cool quote: "Beck spent a day in a chase boat on Lake Michigan taking pictures of the
crew training on a borrowed yacht, and found the drama of tacking
through blowing wheat. An original idea of a cove stripe pitchfork was
changed to a wheat shaft."
http://www.cruisingworld.com/people/classic-americas-cup-the-heart-of-america
