Talon
Yellow Belt
Absolutely none. But isn't that the point of a ninja? You can't see them?
Sorry I couldn't leave this one alone.
More specifically on topic, I know a guy who only trains 1 technique. It's a double punch, where he has one fist over the top of the other, both vertical. He also does iron fist training. (Not sure how his arthritis is going to be in a few years, but that's not the point, his punches HURT.)
The power generation for this punch is a rolling move. And this is all he trains, this one punch at different heights and angles. He can deflect with his forearms as he's rolling and punch straight through, form perfect. I've seen him take down pretty much anyone stupid enough to come against him. Would it be good legally? Depends on the situation. Is it enough? Well, I've never seen a grappler get in close, anyone trying to lock him up he just rolls his arms out of it and punches them.
It takes the saying about 10,000 reps to stupid extremes. As far as I'm aware, he's been doing this for over 20 years, with over 1000 reps a day. A quick use of the calculator tells me that's a bare minimum of 7,300,000 repetitions.
So in short a 'good' punch is extremely powerful and all you need. It just depends on your punch, how you use it and where you have refined it to the point that you really don't need anything else.
Good stuff! I would love to see that guys punching!:ultracool