On Mar 9, 9:34*am, Papa3 wrote:

There's a wonderful picture that pops up on the rotating SSA photo board taken during the prestart period at a Mifflin contest a few years back. * The photographer and several others (including yours truly) were lolling around in wave a couple thousand feet above the clouds enjoying the warm sun while the masses engaged in thermal warfare down in the boundary layer. * Not sure what analyzing those traces would tell you...

Cool photo!

I recall waiting in the pre-start wave at the Fairfield regional a few
years ago well above the convective clouds and looking down to see my
first circular rainbow! Of course, I had to share this experience on
the radio with my fellow competitors. I couldn't understand why they
weren't all happy for me.

It's true that some of my flight path would show up as climbing while
stationary over the ground but the wind was relatively weak and I was
doing S turns and even lazy circles to maintain position in the wave,
which would have no doubt confused any algorithyms designed to filter
out this kind of thing.

Chip Bearden
ASW 24 "JB"
U.S.A.