Ditto. On the hammer lock control, not on the dragging someone around, that's undignified. For me. I was not terribly concerned about the dignity of the "ejected" by that point.I have dragged people backwards with a hair pull. I have seen a friend of mine drag a guy across the ground by his hair. Which are things you couldn't really do with just head control.
So there would be some sort of specific tricks with hair pulls.
I used hair to secure a hammer lock from time to time.