well, backpacking and largemouth usually arent in the same circumstance, if you want to do some wilderness hiking/camping there are all kinds of choices, the only thing that might hinder your progress would be the snow line.
one of my favorites is the three sisters wilderness section of the pacific crest trail.
it is roughly a 40 miler that can be accomplished in 4 days easy, I have done it in 17 hours at once.
there are at least a dozen high mountain lakes along the way. they are all teeming with trout and campsites at almost all of the lakes.