Wiktionary
frontside
a. (context board sports English) Approaching a wave or obstacle forward, rather than backward
Wikipedia
Usage examples of "frontside".
Her effort not to leave him stunned was not entirely successful, because her backside was as esthetic as her frontside, even fully clothed, but then she rounded a turn and was out of sight.
They had admired he recalled not only the tuck but also the wife of the house whose aspect both frontside and backside was scrutinized and commented upon by them.