I wasn't that thrilled with trying the dropper but it works if you want to catch (a lot) more fish!
The downside is you naturally have more tangles and snags. Shorter casts and a 7.5 foot leader are a must.
I've never used the dropper rig in the smokies but will from now on when there is clearly no top water action. It's a game changer.
P.S. A buddy of mine who s an avid fly fisher told me that 90 percent of trout eating occurs below the surface, which means when you fish with a dry only, you're only going to get a hit from that one-off fish now and then. But...with a dropper, if there is a fish in the path he's likely going to hit one or the other!