Going from Terry Trahan's Weaselcraft Blog to Bobbe Edmund's Thick as Thieves Blog led me to the Piper System Website and Blog of Nigel February and Lloyd De Jongh. Now, I might have my Who's Who list wrong about who owns what website and for that, I preemptively apologize.
On The Piper System Website/Blog, you will find a page for YouTube video, check it out as The Piper System is a rather unique South African System of Knifefighting. Yes, I know, "knife-fighting" or "knifefighting" means so many different things to so many different people and those people just love to debate and argue over the terms...for our purposes here, it's a "Knifefighting System."
Another Piper System website is Hans-Erik Petermann's and you can find that site here and you can read a small, interesting article on that site here.
I knew an old nasty Baltimore City Streetfighter when I was a teenager. After my Father died, I fell into some real bad company, to say the least. He had a saying, "You'd rather fight a bobcat in a phonebooth, boy." Sometimes he would substitute a common four letter word, a/k/a/ "THE F-BOMB," for "fight."
Go look at the Piper YouTube videos, and see what it's like to fight a bobcat in a phonebooth.