Hi Jim!
Rock? Naw, I'm just lucky!
Man what a story that reminds of the Moros I believe, that were shot numerous times and were still slashing.
Yes that is spooky, ya know whats worse? Most of the time, they are in groups!
I know from training, that two adult males at one time is VERY hard to deal with, three or more... Well... Ad some crank to the mix and forget about it!
I am sorry to say, that only in the last two years or so, have I trained the choke to the point that it is an option under pressure

But, now it is so...
Even without drugs, pain is not something I like to trust.
Every time I show a Biceps hit to a person in demonstration, I get a great reaction,everyone goes WOW! But, I have done it in sparring too and NOTHING!
After the sparring, the guy had a huge bruise, but DURING the match, NOTHING!
Then I used to think, ok, you have to damage the structure, if he can't stand, he can't fight etc... But there is where drugs can that away.
But, if a man can't breath, that's it! It is like un-pluging the machine period! The one thing I worry about with weapons, is having my own weapon used against me!
This post is moving more and more away from your original question, so I will post something else I want to sayabout this, in the post I started about aerobics being too old etc...
ttfn,
-Rick