The Kerry Parker-trained horse took out the 2000 metre Group 3 Craven Plate on Everest Day at Royal Randwick, the trainer's first Group win since 2018.

The run was Think It Over's best of this campaign, the gelding building through five starts.

Given the improvement he's seen from the horse, Boss is confident he can enjoy another successful prep next autumn.

"I've got a lot of time for this horse, hence why I stuck with him," Boss told Sky Racing. "I think he's going to be an autumn prospect, rather than the spring.

"What he's done, every time he's gone to the races, he's actually been a better animal for me to ride, so there's a lot of upside for this horse. These type of horses you don't know where the roof is because he's a real improving type of horse."

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Boss has ridden Think It Over for all five of his starts this campaign, with the veteran jockey impressed with the way Parker, a Nowra-born trainer, has prepared the gelding.

"It's great for Kerry. I've been saying 'stick with him, stick with him, I know you've got a good horse here. Just stick to the process and what you're doing.'

"They're getting beat, but you just know they're going to turn it on when they get fit and he was fit today. I had a lovely run. I suggest he's a horse that you will follow. I know he's got a nice career in front of him."

Parker started this preparation with one eye on the Melbourne Cup, the trainer optimistic his gelding could develop into a top-notch stayer.

That goal came on the back of an impressive autumn, Think It Over finishing fourth in both the Listed Canberra Cup and Group 3 Manion Cup.

A couple of tough runs early in the spring campaign saw Parker reassess, with a promising effort in the Hill Stakes laying the platform for Saturday's win.

"He's raced well all prep," Parker said. "When we missed out on getting a run in the Kingston Town, we just had to change tact.

"This is a race I thought was probably his best chance at one of these weight for age. I'm absolutely thrilled, absolutely thrilled for our staff at home.

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"It's only a small stable, to get horses to be able to race here on a Saturday, especially group races, it's sensational. They've all done a good job."

Parker will now prepare his charge for the 2000m Rosehill Gold Cup on October 31.

From there, a campaign-ending run in the $1 million The Gong is a possibility.

"The Gong is still on the cards, it still might be a chance. He'll probably go to the Rosehill Gold Cup next, then three weeks to The Gong if he's coping alright.

"He's done a bit of racing, he's been going around every fortnight. It will depend on how he comes through that, it is in the back of my mind, it always has been."

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