Sorry - I didn't see the "attachment" photo that was definitely from 'Sharing the Wind.' The 18SX going vertical was what I was referring to.

They showed that film in a classroom when I was in the Naval Architecture program at UofM - 1982'ish. The summer it came out I was working at the Hobie dealer in Richmond, VA - Trail 'n Sail. We sold a bunch of 18's from that video.