Joe,
Looks like a good pattern. I am wondering, though, about a trailing shuck not making a difference.
Most insects which struggle to escape the meniscus seem to be "trapped" in their own shuck which trails them. Seems to present a "trigger" to trout as it tells them the insect is vulnerable. It seems to be incorporated in some of the most widely celebrated cripple patterns....Caddis or mayfly.

It also serves, in some patterns, as extra stability and as a provider of extra buoyancy.

I take your word for it on the polypara sedge. I wonder, though, more generally as to the triggering effect of a "glistening" shuck.