This came out today in XC Magazine:
http://www.xcmag.com/2014/08/moyess-new-durable-technora-cloth-for-hang-glider-sails/

http://www.moyes.com.au/articles/articles-of-interest/343-the-rx-effect

I have provided this comment at the XC Magazine link above and here:
https://www.facebook.com/xcmag/posts/10152315680244103 at the XC Magazine
Facebook page here:
https://www.facebook.com/xcmag?fref=nf:

Well, very interesting. I have been doing my best to investigate whether the
statements presented here by Moyes are actually the case. This started when I
saw evidence of very rapid deterioration of other Moyes sails, something I had
not seen on other sails.

Does Cross Country Magazine wish to help with that investigation? Does the cloth
used by Moyes have a UV blocking top layer? Is it equivalent to UVODL (available
from Dimension- Polyant)?

You can find some of the results of my investigation here:
http://ozreport.com/forum/viewtopic.php?t=38410

Additional reporting is found here:
http://ozreport.com/18.136#0,
http://ozreport.com/18.137#0,
http://ozreport.com/18.138#0

A relevant quote:

"All modern sailcloth and laminates include UV stabilizers and
coatings in the construction. For laminates, supplemental coatings are applied
between the layers below the upper film ply and are somewhat effective at
protecting the scrim and lower film ply. Unfortunately, they don’t protect the
outer film layer.

"Dimension-Polyant develops and produces an incredible variety of high-tech
fabrics for the industrial, sporting goods and sailcloth markets. Last year, my
technical representative mentioned an industrial polyester film that is
molecularly altered to be ‘impervious’ to UV deterioration. Also, it stops 90%
of UV thru-transmission so it’s more effective than coatings at protecting the
other laminate plies. The only problem was that it seemed prohibitively
expensive—20x more than untreated polyester film. Fortunately, the film price is
a fraction of the laminate price and I decided that, even if the film was only
50% better than standard film, I could easily justify the extra cost. It’s
important to note that film color is not related to structural properties. The
common ‘smoke’ laminate is conventional polyester film. Our UVM material is grey
because the minimum order quantity for a different color (like white) of this
special-purpose film is 20,000 meters. According to Dimension-Polyant, the Wills
Wing UVM laminate is the first application of this film in sailcloth."

Does the Moyes laminate meet the criteria stated in the above
quote?