For 23 years blind swinging nymphs, streamers, and egg flies using single hander 9 and 10 weights. Especially if they are fresh from the lake they will take when holding in the pools. Hit it right and you will think you are in Alaska, I am not kidding.
P.S. Make sure you bring band aids for your bloody knuckles and hands trying to palm the fly spool rim on the long runs.