A very good tailwater fly, but do not discount the use of it on freestone rivers also, just tie it with a tungsten bead and a larger size.
Hook: TMC 2687, Sz: 16-22
Thread: Fire Orange
Bead: Black Glass or Black Tungsten
Rib: Pearl Flashabou
Top Coat: Clear Cure Goo
(Photo courtesy of Danica/flytier.com)