Thought I pass this on, but I'm sure a lot of you know or heard this
already.

This is in regards from previous post I've read on what fly to select.

In the New Fly Fisher show I viewed Sunday mornings, the angler didn't even
bother to look into his fly box until he used his bug screen catcher on the
river. I'm sure most of us have seen one before, but it's a fine meshed
screen about 2'x3' with two handles. He stands down stream about 4-5' with
his bug catcher in the water, as has his friend (upstream) disturb the
bottom with his foot. Sure enough, he catches insects in the bug screen.
They both observe and make the closest match in first size and then color.
Then they plan on the depth, and speed of the drift. It seem to work as
they were hooking up on some good size browns.

They also make nets with the meshed bug screens. Might be something to look
into.
-tom