RRS1, the proper place to hammer the steering arm is directly on the end, about in the center of the circle you show. HORIZONTAL to the ground or you risk bending the arm. It's a fine line: multiple girly-hits only make you tired, while ONE hit at the right angle & force works so well it makes one feel stupid for not doing it that way first.
But after 50 yrs of this hammer-your-brains-out nonsense, last year I hit (pun intended) on a better way for removing tapered ball joints and tie-rod ends: Use an air chisel with a blunt-end tool. Guaranteed, you will not be able to get off the trigger fast enough, it will come out so quickly.
Truism: the older I get, the more I appreciate power tools! BIG power tools!