He collected a winner earlier in the program for Roma trainer Ben Waldron, piloting Le Kita in the QTIS Maiden Plate over 1000 metres.
It was a massive day for the apprentice ranks at St George Jockey Club on Saturday, with all five of the non-TAB events won by apprentices.
Golden rode one winner, Dylan Bennett claimed two, which included the Cup, while Tamara Noble also picked up a winning double.
Golden could look at a permanent move north of the border in the coming period to chase more provincial opportunities through his apprenticeship but he also wants to stay loyal to his boss that has provided him so much.
“I seem to be getting more of a go up in Queensland, which is great,” the young hoop said.
“I am getting more confidence the more I ride up there and trainers are keen to put me on more.
“Eventually I would like to try and base myself up that way, maybe in the later stages of my apprenticeship, but Pete has been great to me and I am keen to stick by him.”
After claiming a winner on the sand at Roma earlier this month, Roma-based trainer Waldron handed Golden three rides on Saturday at St George.
“It is about getting into the bigger areas once you get your confidence and your strike-rate up,” Sinclair said.
“He rides those tracks good now as he has been to Roma a few times and is getting that experience.
“He is getting a good association with some of the trainers around that Queensland country area now. He is getting on the better horses now, which helps.”
Golden – who hails from Port Macquarie originally - was also in the winners enclosure at Wandoan Diggers' Race Club in late May of this year.
A former jockey himself, Sinclair described his apprentice as a person with a ‘great nature’.
“You would go a long, long way to find a better person in the world than Jacob,” Sinclair said.
“Just around the stables, he is such a good worker and he is a great kid.
“He has come a long way the last year or so. He is one of the best kids in the world, he is a beautiful young fella. His work ethic is second to none.”