Four-year-old Gun Pit's perfect record on the dirt has trainer Caspar Fownes wondering if he should depart from the obvious path towards the classic races and think outside the box.

The son of Dubawi again unleashed a brilliant turn of acceleration on the surface to make it four from four on dirt and lived up to Zac Purton's high, even arrogant, expectations.

"It isn't often that you go into a Class Two race knowing that however you ride your horse, it doesn't matter because he's going to win anyway," said Purton after completing a winning double on the gelding. "It's pretty clear that he's a superior horse on the dirt and soon that's going to be a problem.

"He should stay in the class after that win but there won't be more than one or two goes left before he's too highly rated and has to return to the turf. Then things could get difficult."

For most four-year-olds rated in the 90s, the path ahead is a simple one, taking in the Group One Classic Mile, Classic Cup and the Derby but Fownes admits it may not suit Gun Pit.

"It's his Derby year, so there's always the feeling that we should let him have a crack at those races because he'll only get one," Fownes said. "But it looks like he's a better horse on the dirt and so I have Dubai in mind for him.

"It's a case of when. Right now his rating isn't high enough, but there is the option to take him over early for lesser races and let him win his way to qualifying for better ones.

"Alternatively, we could put that idea on hold, let him run against his own age this campaign and look at Dubai for next season. Obviously, we'd have to decide pretty quickly if it was to be this prep."

Purton's earlier win on Winnam for Benno Yung Tin-pang got the prize for the day's biggest margin and brought an impassioned plea to the handicapper from both Yung and the jockey.

"I just ask the handicapper not to kill his future," said Yung after the four and a half length romp. "This was a bloody weak field and the performance was not as good as the margin.

"The horse has had bleeding issues, which is why he has dropped down the ratings, but he has been better this season. To get a big penalty now would be very tough on him."

Purton also went in to bat for the five-year-old, who had been a maiden from 15 previous starts here.

"He looked good but it has taken him 16 goes to win one," said Purton. "He beat nothing and the race couldn't have gone more perfectly.

"I said to Benno a couple of runs ago that, even though he's a horse that gets back, a slow pace suits him best. He tracks up steadily and then quickens off it, like he did today - in a fast run race, they pull the sprint out of him and he just plods. That flattered him today."

It was a vital double for Purton in the absence of suspended Joao Moreira, with the Brazilian returning in early January, when he will get five meetings unopposed by the Australian who has a lengthy suspension of his own to serve then.