Here are a couple things to experiment with. Hold the hair bunch on top of the hook, wrap the first thread lightly around and when you come back around, place the second wrap lightly again just IN FRONT (toward the eye) of the first wrap, then on the third place it again just IN FRONT (toward the eye) of the second wrap, then tighten down. When you tighten the third wrap and the hair tries to flair, the first two wraps will keep it from flairing too much. Now, this will keep the wing tighter, but won't lessen the tendency for the whole buch to spin around the hook toward the underside. The best way to accomplish that is to fix the wing firmly on top by winding a few more wraps through the butt end, while holding the bunch on top. Another option for securing the hair is to wrap the first one or two wraps over top the hair, then under the hair bunch, but ON TOP of the hook (basically making a bundle without securing to the hook), both wraps are done lightly so as not to flair the hair, then, the third wrap goes around the bunch and under the hook and in front of the other wraps, then tighten. You will still need to hold the hair buch on top of the hook and then run a few wraps through the butts to keep it on top. I don't know if that will help, but I tried.
So to sum up and simplify: hold the bunch on top while you secure through the butts of the hair.