Can the butt end of the naginata (the ishizuki) be used to strike?
Yes, the ishizuki can be used to thrust to the throat. However, this is rarely done due to the danger involved. Thrusts (tsuki) to the sides of the body, such as in Shikake-Oji drills #5, 6, & 7, are NOT valid strikes during competition. The ishizuki can also be used to strike the shins or to block strikes to the head or shins.