Decision Time takes the bumper for Katie Walsh© Photo Healy Racing
Decision Time opened her account at the sixth attempt when taking the Irish Stallion Farms EBF Mares bumper at Downpatrick.
The daughter of Milan went close when prominently ridden at Tramore last time, and Katie Walsh elected to bide her time on this occasion.
The John Kiely-trained six-year-old was produced to challenge at the final bend, and the 3/1 chance responded to a strong drive from Walsh.
She stayed on well up the closing hill to beat Osco Mosco by five and a half lengths, with Getaway Katie a further length and a quarter away in third.
The 2/1 favourite Blixt cut out a lot of the running but could find no extra at the business end to finish fourth.
Walsh said, "She has been unlucky in a couple of bumpers. She ran well at Wexford when I rode her and we rode her handier in Tramore and she didn't get home.
"We said we would do that today - when you ride them like that and it works out you are a hero and if it doesn't work out you are a villain!"
(MG & AM)