There's nothing wrong with holding a submission in place before the ref stops you. What you shouldn't be doing is continue cranking hard after your opponent is clearly tapping.
Wrong. What you shouldn't be doing is cranking hard after the ref stops you. This sub looks perfectly ok with me.
You shouldn't really keep cranking hard after the guy tapped if the ref can't get to you in time, just hold the sub in position, this applies especially to moves that can cause severe injuries like leg locks.
No dude Lol Your not supposed to be nice in a fight. Lol your hurting your opponent into submission. It's the refs job to make you stop cranking hard. The ref got to him in time btw.
You're not supposed to be hurting your opponent when he/she has already tapped. Technically sure the ref is the one who's supposed to stop the fight but sometimes they don't get to the fighters in time for one reason or another, in which case the fighters should exercise restraint instead of continue to output damage, same applies to punching fighters after they're clearly out. It might be legal but it's an asshole move that's frowned upon.