[VFB] How many hackle feathers do you use for a fly

[Rene Zillmann]

List,
I recently run through some of my tying books.
When it came to hackling a dry fly, they very often called for 2 
hackles, which were wound one after the other to build the hackle.

When I tie my own dry flies, I usually take one hackle, especially when 
I use saddle feathers. How do y'all do this?

Rene