Colindo said
"So what is some of your setups that provided fresh trout on the trail?"

We have had discussions about the idea of "providing fresh trout" while camping and there are a couple of things to think about - fishing takes time and commitment, so does hiking the JMT. Fishing tackle adds weight, you may catch nothing at all, and finally on the JMT you are in a very fragile eco system and removing (unstocked) fish from lakes in the Sierras, especially golden trout, may not be in the best interest of those species. However sadly, many lakes up there have been destroyed and small black catfish have taken over a lot of areas where native trout can no longer live. As far as know there are no restrictions on catching them. They like mashmallows and artificial bait.
Jim