Grizzly Wulff:

It's happened to me 3 times this season!

In my case in the 4-5 times I can remember it happening its always been in the same stream, (I fish there a lot), and its always been a stocked trout of decent size, 13-16" in a stream with an abundance of wild fish.

Only once has it been on the same fly and only once on the same day, followed by once again on the following day.

In my case I chalk it up to stupid stocked trout .