Well if your tying classice winged wet flies, then you tie ofdf on the side of the hook. The reason for this is to avoid any bumps or larger base before setting the wings. Now when tying on Beards /False Hackles I use the reverse pinch method. Simple to use and very affective. I do have a rotary vise but find the reverse pinch method to work the best on tying material on the bottom side of the hook.

Fontinalis