I would agree with this Doug… In my experience, and based on the experiences of many of my students, what you need is solid control of your opponent and then something that either puts them under control “permanently” (cuffing them or locking them up), or something that physically disables them so they cannot continue. Blackjacks really don’t have the knockout power you would need a blunt object to have, or the range that gives you a real advantage with them. It would hurt to get hit with one, but in a real physical conflict pain does almost nothing…unless your opponent isn’t very serious. You have to have either solid control or something that disables the opponent, which is a kind of control actually.