Re: Non-ceramic Bobbins
Most or today's bobbin holders will accommodate a wide variety of material spools by simply adjusting the arms to it them. The only thread spool they don't fit is the old gudebrod skinny spools. The height of spools from different manufacturers doesn't vary the much if at all.
YOUR way is not the ONLY way when tying flies!
Fly tyers can be masters of making things complicated!
You're only limited by lack of imagination. Be creative, experiment.