Surfing sisters make wavesBut Airini and Sarah Mason will have to put the supportive sibling role on hold on Friday as they compete for the last remaining place in the season-opening event of the women's world tour. The southern Gold Coast girls are among a field of 12 vying for the event wildcard. Winning a wildcard in to the Roxy Pro is a massive boost for aspiring surfers – four years ago a Tweed schoolgirl named Steph Gilmore was granted the wildcard, and the rest, as they say, is history.Junior prodigy Sarah Mason won a wildcard in to the event last year as a 13-year-old, while her 20-year-old sister has made it to the qualifying round four times without ever cracking the main draw.