Was rolling with this guy today, I guess an 8yr purp. He doesn't have a passing game, he is super tense and relies on falling back into straight footlocks. I've noticed that he slams on these locks really aggressively, and frequently I just tap since I feel threatened, however today we were in a 50/50 game and I calmly pulled him into sweet heelhook position (I didn't apply it, just bent the leg into the sweet spot) he freaked out and was going very hard on my ankles when he could. I decided to not tap, chill out and watch him (that's a fun thing to do if you want to gauge someone BTW) and in the end after he cranked for about 20 seconds with his entire body I tapped and shook my head. My goal was not to tap in order to help understand his technique was off a bit, and to keep calm he would match my pace (I guess I need to work on reprogramming him more) but I was at risk, since the amount of force involved if he got lucky and found the right spot he would have cause serious harm. I wouldn't do this with 'an enemy' but I have been training with this guy for years, and want to help him learn - is this something you would do too, or would you keep on tapping early even when his technique isn't right?