"Winning the Grand Prix made it a great day and I'm very happy. Even when Arjun and Brandon went off in front of me I knew it wasn't over and that I had 15 laps until the finish.
"I had to stay focused and do my job correctly, which I did being consistent and not making any mistakes and it worked out."
On hand to watch his son's progress over the five-week, 16-race series was his dad Lawrence Stroll, the successful fashion magnate.
The teenager has now added the TRS championship to the Italian Formula Four title he won last year and is now one of the Ferrari Drivers Academy's brightest stars.
"Obviously it couldn't be better, winning the championship and the New Zealand Grand Prix on the same day. All-out perfection," said Stroll senior. "The series has been fantastic and we couldn't have spent a better five weeks racing and the preparation for his [Lance's] F3 series in Europe this year couldn't be better.
"The competition standard has been fantastic and my hat's off to the organisation as they've done a fantastic job."
Stroll led the championship after the first race at Ruapuna, and despite the close attention of Maini, Maisano and others, he was never headed and remained at the forefront of the series after every race.
"Qualifying is one thing and it does put you in a good place for the race," he said yesterday.
"But if you don't know how to race you'll never win. I've always been focused in improving my racecraft and it's worked for me these last five weeks," he said.
In another tough weekend for the Kiwis in the field the best of the bunch, Damon Leitch, finished 10th followed by Jamie Conroy 12th, James Munro 15th and Brendon Leitch 16th.