The hopper myth?

Larry wrote:
snip
When and where have you experienced good fishing to hopper patterns and
thought that 'hopper' was a key to the fish? I'm tempted to think such
situations are actually far more rare than the stories about them in the
magazines.

Slough Creek, Yellowstone. On windy afternoons from mid-August
into September the big cutts won't touch much of anything else.

--
Ken Fortenberry