He began his Hull career on 27 September 1981 when 16,159 turned out to the Boulevard to see both O'Hara and Leuluai début in a 42–24 win (Kemble had already appeared) against Castleford.
[citation needed] Amongst his many outstanding performances, Dane O'Hara played on the wing, and scored a try in Hull FC's 14-14 draw with Widnes in the 1982 Challenge Cup Final during the 1981–82 season at Wembley Stadium, London on Saturday 1 May 1982, in front of a crowd of 92,147,[4] he was ruled out of Hull's 18–9 win in the replay at Elland Road through injury (Clive Sullivan played in his place).
O'Hara captained the side in his last full season, 1990, leading Hull to a (losing) Premiership play-off final at Old Trafford, the only major trophy to elude him in his time in England.
O'Hara played on the wing and scored a try in Hull FC's 13-2 victory over Castleford in the 1983 Yorkshire Cup Final during the 1983–84 season at Elland Road, Leeds on Saturday 15 October 1983, played on the wing in the 29-12 victory over Hull Kingston Rovers in the 1984 Yorkshire Cup Final during the 1984–85 season at Boothferry Park, Kingston upon Hull on Saturday 27 October 1984, and played at centre and scored two tries in the 24-31 defeat by Castleford in the 1986 Yorkshire Cup Final during the 1986–87 season at Headingley, Leeds on Saturday 11 October 1986.
[citation needed] He received a testimonial year in 1989 / 1990, having achieved a remarkable 300 appearances for Club and Country, becoming the first overseas player ever to be awarded such a benefit.