I took the coaching class at OSU in the 1970's. Professor for the class was supposed to be none other than Woody Hayes. So I get prepared for my first class. I am totally excited and intimidated. I have a tape recorder so as not to miss a word. I get to the classroom real early to get prepared. I set up and wait. In walks Coach Hayes. A few other students arrive. Class starts and I click on the recorder. Coach Hayes perks up and spies the recorder and walks over to my seat. He asks, "what is that?" I say, "Coach I don't want to miss anything and I will listen to the class recording to make sure my notes are complete." Coach looks me dead in the eye, and says to me, "If you can't keep up, get out, turn that damn thing off." I turn it off and darn near pass out.
Coach Hayes taught the class about once a week. and assistants took the other days. I spoke to Coach Hayes a few times after that and he was cordial.
I did learn from him. I can still hear him say, " double team the inside of the hole on running plays every chance you get."