I have fished wooly buggers several ways, but my most successful method involves fishing current seams and stripping the bugger upstream using small, rapid strips of the line. The amount of weight depends on the type of situation. Sometimes I have to use one or two pieces of shot. Other times no shot is needed. The key is short, rapid twitching; however, the frequency of the presentation will vary depending on the water temperature. IMO, a size 10 crystal bugger is the best fly to fish for freshly stocked trout.