HPT Emerger = 'Hairy Pheasant Tail'
Just sent this fly to Hans for Flytyer's page. I like hair hackles when fishing nymphs just below the surface. You can even add a little floatant to the fly so it sits right in the surface film. This allows you to fish a well-degreased leader to avoid drag whilst keeping the nymph riding nice and high.
Hook: Grip 14723BL #12
Thread: 10/0 Olive Powersilk
Rib: as thread
Abdomen: Pheasant Tail
Thorax: Rabbit, spun in split thread. Yellow Awesome Possum behind (thanks Fran...)
(HPT = Hairy Pheasant Tail)
Change the density of hackle (spun in a split thread) to suit.