Has anyone tried using overhand loops as stopper knots in the thin strings when using the blasted ferrules that usually come with pin or through-string bridges? I'm looking for something even bulkier than Ashley stopper knots, so I don't have to tie the strings to the ferrules (or go hit-and-miss shopping for beads). I tied a spare string of the thinnest gauge I use into an overhand loop, and it appears the knot would be bulky enough, but my ferrules are all in use and I'm not ready to change strings again, so I haven't run a test...