KIT33R said..
Tons of good stuff andalso..
The toughest guy I ever had the privilege of sparing would block attacks with his fists. Your hands, feet, shins and arms were his primary targets before the head shots came in. A truly tough basted. But I learnt a lot.
That reminds me of one thing I was told long also (a phrase to teach by)
Don't block - STRIKE at their limb that is coming toward you. Blocking is what the loser does.
Goes towards establishing a mentality of changing the fear and blocking, into assertive angry striking counterattack.
The difference in mindset changes a lot in'self defence'
And like I said, play dirty. The king hit from his gutless mate that you did not see, may kill you.