I need to fix 4' fence posts to the top of an existing 9" brick wall. I know of two options: (1) fix metpost bolt down brackets to top of wall and (2) bolt support timbers to front/back of wall and fix fence post to these. Neither option is aesthetically great. Does anyone have any ingenius ideas? Would it be possible to drill and epoxy in a steel tie bar connecting the fence post to the top of the wall?