In mountain streams I seem to have the best luck with streamers in high, and/or off-color water. I like the sinking line and unweighted streamers as well (my set-up is a 6wt with 200 gr SA streamer express). You can though, make due with weighted streamers with floating lines, especially while wading and hitting close targets. Sometimes, if a good fish flashes my indicator, I will cut off several feet of my 9' (down to 4 or 5') leader, tie on a streamer and swing and twitch it through there. This can be done quickly and relatively effectively with a faster rod.
Watch the Galloup video, or read his book. He is often fishing from a boat, drifting a river, going for a reaction strike to a suddenly presented fleeing baitfish.
It can be loads of fun, a decent fish will try to take the rod away from you! Can be a great tactic on winter run fish, or after a big rain (when the water is clearing), or a rain event during a full moon. More lethargic fish will take nymphs, aggressive fish will hit a streamer.
Lots of different tactics to the sport, use the ones that interest you.