I use a 7'11" 3wt. The cons for me are casting heavy flies like weighted buggers and just because the stream is small doesn't mean the fish is. I hung a stream born bow on it a couple of months ago in a very small creek that was 24" if it was 1" I couldn't turn him at all. I have caught 20"ers but not stream born ones. The pro is that it makes dry fly fishing easier and makes you more nimble. My dad uses a 7'6" 4wt (Cabela's Stowaway) almost exclusively and loves it.