I'm still new to trout fishing, though I've done some river fishing for smallmouth bass. I've had at least a little luck with dries, and somewhat more success with nymph + indicator rigs.

I'd also like to learn about streamers. My main question is this: when you get to a trout stream, what exactly do you look for that would make you decide to use a streamer rather than nymphs?

I'd appreciate any thoughts, but I'd also appreciate any books you might be able to suggest that might help.