I tie a pattern just like that but use snowshoe fur or CDC instead of the antron. Keeps the fly in the film pretty well (for a while at least). The neoprene is a good idea.
Jake you must have some big Chiros out there to do a size 12! We dont get anything bigger than an 18 - 20 in these parts and I'm usually stuck with 24s if I want to actually catch anything.
Haul - love the new title. Banged out 7 freshwater rat's asses last night for the warmwater swap - will that be enough flies (including one for yourself?)