Beware low jumping at grownups' leapfrog.

On Thursday, October 23, 2014 7:09:20 PM UTC-6, Nick Kennedy wrote:
https://www.youtube.com/watch?v=srNTtuTqUBE

Surfing Aircraft Vortices for Energy

Interesting piece from Boeing Aircraft

Next summer when KS goes past me in his Duo Discus I think I am going to try this technique to keep up.