Wow! Now if you put a smoke canister into the appropriate wingtip, you would be able to see where the good air is.
Heinz

On Friday, October 24, 2014 3:34:03 AM UTC-7, Karl Striedieck wrote:

Hey Nick, John Seymour and I have done such many years ago in our ASW-20's. One would position his glider behind lead about 100 feet, level in altitude and with the wing tip behind leads spoiler. Sure enough, the guy behind slowly moves forward and has enough energy to pass under or over. Lead is now number two and can repeat the same thing in a sort of grown ups leap frog.

KS