Jeff,
I did a bit of light reading last nite about the Goat's Toe. From what I read, the original dressing had a red wool body with a peacock herl rib. I can't see that being very durable, but was a popular technique at the time. Sometime later it was changed to the dressing you provided which seems to be a heartier fly that won't fall apart after one fish.
There is also a variant being dressed with a green peacock neck feather (easier to find in these parts) that is also a very effective fly.
You have stirred my interest in this fly. Need more books in the libraray.
REE
Happiness is wading boots that never have a chance to dry out.