Making your WC deadly

[Chazmek]

how would snake not work with out if pressure points strikes don't work...what do you need for pressure point strikes to work?????

From my understanding, Snake does not rely on hard bludgeoning techniques in order to neutralize an opponent. Strikes are aimed at specific parts of the body that cause unconscious reflex reactions (like hitting your knee with the rubber thingy at the doctor's office), intense pain or numbness (your "funny bone" or ulnar nerve is a good example), or knock-outs (like I described earlier). It will still use throws and certain types of chin'na, and the basic levels still used closed-fist strikes. But it would be really difficult to win a fight using the soft, jabby pokes that Snake is known for if the points you were hitting didn't have any effect. Sure you can still poke someone in the eyes or the throat or the groin, but if a style only has a few viable targets that it can effectively damage on an opponent, it's not a very practical style.
And yes, you could train your hands to bust through concrete and sand bags so you didn't need to worry about where you hit someone, but it's really difficult to condition up to that level and maintain the sensitivity required for stuff like Sticky Hands (which Snake uses extensively).

As far as "what you need for pressure point strikes to work", it doesn't take much.
There's no secret to it. Most of the points are obvious if you know your anatomy: major nerve branches, eyes, muscle insertion points, arterial sinuses, joint connective tissue, etc.
Once you know where to hit, it's just a matter of training your hands to be able to strike with the finger-tips (allowing you to concentrate the pressue into a much smaller area) and learning how to strike the points in the right way so as to cause the desired effect.