Sierra fisher writes:

Nymphing is what you do until the fish start rising.

Exactly!

Net? Dynamite? Where would be the challenge of that? Nymphing, in my
opinion, is much more difficult than dry fly fishing. You have to be at the
right depth, the right speed, and the right distance (cast), *and* you have to
use what the fish are eating which you can't see as you can in dry fly fishing.

Dave

http://hometown.aol.com/davplac/myhomepage/index.html