I use the rotary feature of my vise to tie all of my flies. Material placement is much easier with the roatary, as you can see the material as it goes on all parts of the hook shank. There is no longer a back or bottom that you can't see. Wrapping hackle or other material is simply a matter of holding the material and turning the hook.
Having tied on a non-rotary vise for years, when I made the switch my tying improved, as did the speed at which I could tie a better fly.
REE
Happiness is wading boots that never have a chance to dry out.