Since trout feed the majority of the time subsurface. Do any of you do it 100% of the time? Are there any who never cast a dry fly? We could even take it further and say just fish streamers, or just nymphs/emergers?

I've asked a similar question on "does anybody dry fly fish only?" Nobody said they did, but I think i might get a different answer for sub surface flt fishing.

Doing nothing but subsurface fishing would simplify your fishing a bit as to what you have to take with you on the stream, what line to use, where you fish etc.