Yes thanks for a great post! I find it interesting that the "dry" river beds, and the "wet" cattle tanks out west seem to produce great thermals. I have always attributed that to a "low" area allowing the heat bubble to pool to a larger size before being ripped off due to the wind. The late 1V, Carl Herold, always commented that you cant get good thermal days without a good 10-15 mph of wind to keep them releasing.

CH