At risk of letting the mangy old cat well and truly out of the bag, the internet rumor gone viral is that
6ZQ employed a secret high tech 2 part epoxy coating which enveloped the entire airframe, thus making it
slicker than Sknot. I'm told by the horse's mouth that an additional 50Sknots of air speed is the minimum
performance improvement to be expected.

http://speedmods.com/knotwax.htm

But be careful because as the saying goes, a fool and his money are soon parted...

:-)

4ZQ