I took PM to Springfield last Thursday for a little trough soaring. Trough soaring is like wave soaring. Both use mountain waves. In wave soaring you ride the crest of the wave to high altitudes. In trough soaring you ride around in the trough of the wave hoping to get up to the crest.
It was a nice 3 hour flight (the data logger was not working for the first half). A lot of it was hanging around between 5,000' and 6,000' waiting for stronger lift.
Thank you Walter for towing and Sonny for wing running.
PM is currently in Walter's hangar and ready to fly (I have the data logger and battery).