I use mine all the time and don't have a true rotary vise. Mine's home made out of a piece of spring steel to hold insulation between floor joists. I got tired of the bobbin always hanging right there while trying to wrap quill bodies on dry's, tinsel bodies on streamers, counterwrapping oval tinsel over the flat tinsel etc etc. Every wrap would hit the hanging bobbin! After tying in what I need to, on the rest it goes, out of the way, to give me lots of space to wrap all the other stuff. The rest is never in the way, and I can flick it to swing it to the rear of the vise at any time when I don't need it.

Regards,
Mark