Lay a tan thread base over the front part of the shank only and leave the thread hanging above the hook point; the body is not tied in far back.
Make the extended body: hold a length of the synthetic yarn at both ends and spin it two or three times until it is a tight noodle, then bring your fingers together and let it furl back on itself naturally.
Trim the fuzz off the furled body and bind it in above the hook point so it extends well past the bend; this is a long-bodied fly. Add a few wraps to smooth the tie-in, then snip the front end and any stray fibers off the back.
Take a few more wraps and keep the thread at the back of the tie-in. Bunch up a Dun or tan CDC feather, measure it about as long as the extended body, and bind it in with a pinch wrap where the thread hangs. A couple more wraps to secure, then trim the excess forward.
Smooth the tie-in area with a few thread wraps so the hackle has an even base.
Size the Ginger hackle to about one and a half hook gaps and catch it in at the front of the wing tie-in with a couple of wraps, leaving the stem running forward to keep the underbody smooth.
Wind the hackle five or six turns; this is what floats the fly while the extended body sits down in the film. Snip the excess.
Pull the hackle back, take a few wraps to clear a spot, whip finish and add a drop of head cement.