Marcelo insists that his students meet at a middle-ground to ensure each other's safety when hunting for leg submissions. If you are trying to finish with a Leg-Lock (e.g. a Knee-Bar, Ankle-Lock, Toe-Hold, Calf-Slicer, Heel-Hook, et al.), don't "crank" the submission as a method of finish. Instead, apply controlled pressure while remaining vigilant over your partner's response. This modality is often phrased as "Catch-and-Release." It is important for your training partner to recognize when they are in danger, and to apply the appropriate defensive measures before incurring injury. If your partner tries to remove themselves from the problem using strength rather than technique, they may hurt themselves even though you aren't applying a breaking mechanic. This is why you must release the hold and inform your partner of the potential danger of not tapping in time or using a correct escape. Conversely, it is the responsibility of the individual inside the submission to understand their options and to tap-out much earlier than their joint(s) could possibly endure. In this case it is better to be safe than sorry, as injuries to one's legs tend to be costly, and in many cases cause long-term or permanent disability without the recourse of surgical intervention. This type of approach to leg-locks comes with the downside that their will be a rise in false-positives; you may have an inflated sense of success rate when it comes to effectively finishing an opponent when the stakes are high (in a tournament or fight) if your partner is tapping out early and not defending to their maximum limit. However, this is the price we must pay if we are to practice these holds with impunity. Otherwise, we would crank as hard as we could with leg-locks to better practice how we would finish if going 100%, but at the impractical risk of potentially losing training partners due to increase in injury. If we can all agree to treat one another with this kind of respect and understanding, it is possible that many tournament-banned submission holds could be instantiated both for gi and nogi regulations alike.