Thingamabobber medium most often for double or triple rig weighted with a bh wire worm (haven't tried the smallest but that might work also). For BC waters where 1 fly only or small streams, small corky type. Only thing I dislike about the Thingamabobber is how it kinks the leader (and that they need a specific diameter so they don't slip, i.e., cant use when fishing shallower water). Other then that, they have worked great for me!!