Ahrens, who is best known as the trainer of former top stayer Spechenka, has 20 horses in work at his Beaudesert property and hopes the tide has turned after his Dalby win.
Spechenka earned almost $530,000 in prizemoney during his career with 12 wins from 61 starts.
His best wins were in the Group 3 Summer Cup (2400m) at Randwick in 2010 and Group 3 Queens Cup (3200m) at Eagle Farm in 2012.
He also won the 2400-metre Listed Caloundra Cup over 2400 metres in 2011.
“We started off the season pretty well but we’ve had one of those runs every trainer goes through,” he said.
“I reckon I had a worse run a few years ago but until Saturday’s Dalby win, this had been my second worst run.”
Ahrens has booked Ryan Wiggins to partner Arise My Son, who was beaten more than seven lengths at Toowoomba.
“If you take out his Toowoomba run, his form is not too bad,” he said.
“For some reason Toowoomba is Toowoomba and horses can often run a bad race up there under lights for the first time.
“His run before when he ran fifth at Eagle Farm was good as he was trapped deep from the outside alley and knocked up.
“You could have made a case for him being unlucky not to win at Eagle Farm.”