I am very much a fan of Instructor Zero (of Funker Tactical Fame) and Doug Marcaida (also of Funker Tactical Fame). In their first meeting, Doug puts the “21-foot rule” to shame, taking the best of Zero (especially considering drawing from concealment.)
Then, something interesting happens, Zero starts exploring non-traditional methods that include falling down (which is not typically something an instructor will tell you to do in most situations.) As the series evolves, it certainly broke my conventional thinking.
Episode two is below, but you can catch the whole series Funker Tactical’s YouTube channel.