Jonathan,

As I recall one of the PDA soaring programs claimed to predict thermal
location based on past logs, sun angle, wind, etc. Would it be tough to
write a program that paints in semi-opaque thermals based on, say, 10
or 20 logs from a given area, like a race site?

I'm sure first attempts would be too simplistic, but playing with the
program over time might yield the kind of analysis you're looking for.
Limited use, I grant you. But potentially interesting.

OC (not a bug racer)