Yep a # 6 Mustab 3366 on a 20 lds mono loop its about 3in long,No since in messing around. mcsneek I run weighted rap to but first the thread base for the cone first and then push the cone over the base out of the way,then free rap my weight and slide it up against the thread base tie it down with several thread wraps,Then I tie the rest of my fly ,finishing by pushing the cone back over my thread base and against all that hackle then whip finish the very front of the cone.Its looks and holds better than trying to build all that thread up at the last minute.Just don't build it up to the point you cant get the cone over it.If you don't build some kind of base with the jig hook the cone slides up the bend.