Fullback Chevy Stewart will have a long future in the NRL, according to the Raiders’ coach. (Jono Searle/AAP PHOTOS) By Joel Gould in Brisbane Canberra coach Ricky Stuart has given 18-year-old fullback Chevy Stewart an inspired vote of confidence after the rookie bounced back from a difficult first half in the 34-10 loss to Brisbane. Stewart, who has his opportunity due to a knee injury to star fullback Jordan Rapana, made his NRL debut the prev…