Hynes was a versatile player who was used as a key defender, key forward or ruckman. Hynes crossed to rival club Fremantle in 1996 and spent two seasons with the club. When not selected by Fremantle during this time he represented South Fremantle in the West Australian Football League (WAFL) and was a member of their 1997 premiership team, winning the Simpson Medal for the best player in the Grand Final.
South Australia 19.13 (127) defeated Western Australia 14.17 (91), at Football Park, 2 June 1993, crowd: 21,487
South Australia 16.13 (109) defeated Victoria 14.13 (97), at the MCG, 5 June 1993, crowd: 31,792