Lay a thread base and dub a slim tapered abdomen of the Antron/rabbit blend over the rear two-thirds.
Stack a small bunch of elk hair and tie it in as a low tent-style downwing, tips extending to about the bend, butts pointing forward over the eye.
Tie in a strip of closed-cell foam at the front, over the elk-hair butts, leaving the tag forward.
Dub a short thorax under the foam butts.
Pull the foam strip forward over the thorax and lash it down just behind the eye to form a bulbous buoyant 'balloon' head, then trim the excess. The foam head is what keeps this low-rider afloat like a struggling caddis.