Halloween upper sac

Into the flow
dogwood and maple turn and churn.
Even the moon quakes tonight.

Rumbling thunder behind me.
From my zen march I awake!
The engineer's horn.

Behind the veil,
Casting caddis adrift in current,
to no avail.

Between the corduroy,
rising to the caddis beat.
I cast.
Fish rise.
Cane bent.
Released in solitude's wholeness.

http://tonysalpenglow.blogspot.com/2...0-31-2014.html

Nice October Caddis fly.

How does it fish? Does the abdomen go below the surface film and the rest on the surface?