YNP is planning to use a nuke when a sniper rifle would do the job - please comment.

[Byron haugh]

If you were upstream of the canyon, that's the section that will be wiped out. I bet you have never caught more than 1-2 brookies there even on days when you catch thirty or forty fish, have you?

I have only caught Cutthroats there. And, they were surprisingly large.
We were there when there were Drakes about.