I am 100% in favor of the brain shot...no chasing wounded elephant. I am also in favor of a slight variation of that technique for the frontal brain shot, but for the first-timer, I just don't see that happening, unless mostly by accident (unless the PH is telling the client exactly where to shoot, and that doesn't count).

And if they are coming, in the heat of the moment and if they have their ears back flat against their head, it is that much more difficult to place a frontal brain shot correctly.

Not to mention that when they are coming, it's every man for himself!