I am looking for some advice dealing with someone who does not tap...repeatedly. I can understand going out a few times through the course of training. But, I have personally choked him unconscious 3 times in the last 2 weeks. I know that a brown belt has put him out as well in the same time period. All of these have been some sort of lapel choke. I spoke with my instructor after the first two times. He then spoke with the student who continues to claim that he either didn't think it was deep or he didn't "go completely out". I have avoided chokes with him until today's class. I cross choked him from mount and he didn't tap. I knew it was deep and I just had that feeling that it was on too long so I rolled to guard and let it go. He popped up and started reaching his arms around like a zombie, he had surely been unconscious. He claimed he was fine and tried to continue grappling as if nothing happened. Anyway...90% of me says "F it, if he doesn't want to tap then he goes out. However, part of me does not like regularly choking out a training partner. Which way do you lean on this? P.S. He is a good blue belt with over 2 years of training. I am a purple belt for whatever that is worth.