Coney Island was Harty's first Grade One winner since Captain Cee Bee, a previous winner of the Supreme Novices' Hurdle at Cheltenham, landed the Ryanair Novice Chase at Punchestown over six and a half years ago.
"It's nice to get on the board again. Captain Cee Bee was placed in a few Grade Ones in the meantime as well," said the Curragh-based trainer.
"We have a few options for this horse, which is a nice problem to have.
"We could have run the other day and found out he wasn't as good as we hoped, but it was the opposite and those are the days you cherish."