I'm not sure where I saw this but it works great. Instead of worrying about stray fibers just whip finish the hackle by hand around the the wing post, cut the extra off carefully, and you don't even have to go near the eye. Remember, you must bind the hackle to the post and wind it down toward the base of the post. It is there that you whip finish it. You can also do it with a whip finish tool. Also, remember that an inferior quality hackle or a twisted stem can cause many stray fibers and can be a real problem when winding. Hope I helped in some way.