Hynes played for the Dandenong Stingrays in the Talent League. He averaged 23.7 disposals and 1.5 goals in his draft year,[2] coming second place in the Morrish Medal, with two votes less than the winner Xavier Lindsay.[3] He was also named at half-forward in the 2024 RMC Coates Talent League Team of the Year.[4]
Hynes also played for Vic Metro in the Under 18 Championships.[5] In his best performance, he gathered 20 disposals and two goals against Western Australia.[6]