Specifically I'm discussing heel hooks, ankle locks, leg locks, achilles locks, etc. Any time a grappler latches on to a leg basically. Back in the day and watching old fights it was common to see someone grab a leg and the opponent quickly panic and give up very quickly. In modern MMA its rare to see fights finished with these types of maneuvers. Is it really just as simple as basic BJJ defense knowledge and knowing how to position yourself to avoid the pressure of these subs? Its really crazy to think of the evolution of this aspect of fighting and grappling.