The sail on Johnny and Charlie's boat is Cuben fiber, so it is going to hold its shape differently (so I have been told - you guys might help me on this one.) I hear it is very light weight. Their spin is also very light weight, a couple of pounds less.

WF and Bob were sailing with Ulhman Pentax, (the smoke colored sail)

Most of the Spins are Ulhman's - the most current shape comes the design that Jay Glaser and Peter Johnstone worked out.

Bill