The 'Klink and Dink ‘ dry fly has a small ring on the hook bend to attach a short dropper and a submerged nymph although the special fly is not really necessary as a dry fly on the bob (first Dropper) and a small nymph on the second works just as well. Watch the dry fly as a take on the submerged nymph will show on the floating fly. Most takes are on the nymph, but not always. Another variation is a greased nylon dropper with a submerged nymph on the point. Takes will show when the dropper suddenly goes under. Keep learning fishing is for life.