WW,

You can use squirrel hair, and not just the tails, for lots of things. Dubbing, wing cases and legs on nymphs, tails on many flies.

I don't know of any 'patterns' that call for it specifically (I tend to ignoe the whole 'pattern' thing mostly), but I do know that you can substitute it into any fly that calls for such things and catch fish on it.

I actually prefer if for wing cases and tailing on GRHE type baits. Durable and easy to use. I like that the tail hair doesn't require 'stacking' but comes pre 'evened' by the squirrel.

Good Luck!

Buddy