http://www.abc.net.au/lateline/content/2007/s1850120.htm


Godfrey writes:

The track logs are VERY interesting.


We have placed 10 pilots in the area with Ewa and Zhongpin and ran the horse
race in 3D. The difference between getting sucked up and getting away was a few
hundred metres.

http://www.paraglidingforum.com/viewtopic.php?p=59866