I have always heard folks say that if you plan to do alot, or even a little hammering (tent stakes, batoning etc.) with the back of your hawk that you need to have a hawk with a hardened pole; This is due to the eye being soft and more apt to deform or crack under the added stress of the hammering. My question is this, If you harden the pole isnt the eye still soft? and if so, why is it any more apt to not crack with a hardened pole vs one that isnt?