This Knife Training Drill is from SDTS Module 9 of the Elite Membership
You can dance with your knife in the air all you want, but unless you practice actually sticking it into something you will never know how well you will perform.
Using a knife isn't a game of tag - you need to grip it and rip it and REPEAT. Nothing fancy - put the pointy end in the bad guy and make sure you can pull it out and do it again.
One stab isn't enough. Depending on where you stick your attacker (we go over the target areas in Module 9.)
People have used meat and jugs of water for this - that's OK, but it's expensive and messy. We suggest a stack of cardboard and duct tape will do just fine. This way you can reuse it and not worry about the clean up.
Remember, just because you stabbed him, it doesn't mean the fight is over. You will still have to FIGHT.
One stab is all it take to fix your grip and a few stabs will tell you if your knife is any good.