I think we cripple ourselves with these tools. Those guys back in the day tied with just their hands and no vise, no bobbin cradle. Hell most people think you need special scissors when any small sewing scissors will work.I've got several of those old ball points - each in a different size - very handy for packing hair, moving a half hitch on your thread up under flared out hair, etc... The best part is that they're free... Years and years ago before fly fishing got popular we simply didn't have access, mostly, to the tools we wanted so you learned to make your own...
If you want tight deer hair you should be stacking and packing, not spinning.
Pat Cohen as mentioned earlier can explain some of the better techniques.
You also need a heavy duty packer, Cohen makes an excellent one called the fugly packer, but these tools can be made at home with little effort. I've made small packers but bought a large one of his because it was quicker and easier.
X2 on GSP is a must, also you need a quality vise, you don't want the hook shifting around with the pressure you'll be needing to apply to pack the hair up the shank to get it right.
Happy Tying, good luck.
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