Does Stop Thrust really stop?

[JP42]

Originally Posted by Peter V. Dell'Orto

That's correct, although see Holding A Foe At Bay (GURPS Martial Arts, p. 106) for ways to leave an impaling weapon inside someone to keep them from advancing . . . unless they're willing and able to impale themselves. Or back off and move back in.

A Stop Thrust is good for doing this, but it's not automatic.

Only peripherally related - aren't there rules for also stabbing all the way through someone without them moving into the blow? Just by your own strength? I'm guessing they'd be similar in terms of bypassing a certain amount of HP and then the back armor DR...