Old Bricks, an occasional PPRuNer, used to go out with the Per Ardua pack. He told us that there were 3 options:
1. Follow the little buggers. That was quite knackering!
2. Stand at the top of a hill and watch them. That was rather more gentlemanly, but one could get rather chilly.
3. Sit in a nice warm pub and think about them.
Option 3 got his vote!