As a general rule for winter fishing i fish a 15ft type6 9wt sink tip on a 4 foot leader and unweighted flies. Sometimes' actually rarely i use a 15 ft 550grain sink tip and unweighted flies, but only in cold dirty water. I dont use any weighted flies anymore. I dont see the point in it. Unless your trying to fish very deep wateror want to use a floating line. Remember a steelhead can's see a fly when its below him.