I prefer the traditional slim Pheasant Tail profile over the bulkier versions sold today as I think it is more subtle and effective.  But it has two problems—lack or durability and not enough weight to sink it well.  In my version, I add two small black tungsten beads to preserve the slim profile (and avoid a flashy and bulky gold bead), and I bury the wing case windings under the beads and twist the pheasant tail for the body with the wire and a loop of thread so the body does not fall apart as easily.  I also replace the traditional tails of pheasant tail fibers with bronze mallard, which has the right shade and better markings than pheasant tail.  It's now my go-to version of the Pheasant Tail Nymph. - Tom Rosenbauer.