I threw this together for someone on one of my Ravelry groups but I thought it would be good to share here.
This is my method of flicking locks. That’s just a dog brush (the kind that looks like a mini carder). Brush through the tip end several times until it’s all fluffy. Then do the same to the butt end. Twist the lock before you brush and hold it at the twist. It’s easier to brush against your leg but put a piece of leather or heavy cloth on your leg. Those tines are sharp. Once done, I comb but you can spin from it just as it is. Fluff it out a bit with your fingers and predraft it out a little if you want
I really only try to brush the ends, the last 1/2 inch or so, unless there is a lot of tiny vm in the lock. Then I’ll brush all of it. I don’t always flick. If the tips are funky or there are second cuts, then I flick both ends. Sometimes I’ll only flick the tips. Even with in the same fleece I could flick both ends on one lock, just the tips on the next or not at all on another lock. It just depends on the condition of the lock.