Roller Derby has long evolved from fishnet tights and elbows in the face to a well respected fast paced game of endurance, skill, strength and smarts. Barbara Robinson and Oonagh ‘Mauler’ O’Flaherty of Team Ireland share their experiences fresh off the track from the roller derby World Cup in Manchester. Photos by Sara Marsden. Barbara Robinson When I joined the Belfast roller derby team 7 years ago it was just for a fun new way to keep fit and learn how to skate. Before roller derby, I was very shy and had very little confidence. I had no idea how…