Originally Posted by Curly_Horse_CMT
Why would you force him with a stud chain, lip chain, twitch? If he is frightened of the shafts, work him thorough it with patience, not with force through a stud chain, twitch, ect.
The stud chain etc. is probably not used in an attempt to force the horse through a scary situation, but rather to try to prevent the misbehavior
(bolting) that he's gotten in the habit of.