I'm not Paul, but I'll play him on the web, for a minute anyway...
The 'Old Marker Exercise" TM is where nage puts on a t-shirt or old dogi (preferably white) and uke gets a magic marker, which they weild like a knife. This is guaranteed to point out all weaknesses in your knife defense technique...well, most of them, anyway.
It really can be very enlightening, to grapplers, aikidoka, boxers, whatever. They all have their weaknesses against a descent knife fighter.
PS If you really want to learn about defending against knives, find someone who uses them regularly as part of their training...some of the arnis and silat groups have some really good people.
Last edited by Ron Tisdale : 04-08-2004 at 08:41 AM.