Hamilton had heard about Wilkin's course record nine under par 63 and said "that a number is there if you put it all together.''
The Royal Auckland Golfer, who teed off on hole 10, came back into form in the most spectacular way making eight birdies and an eagle only to bogey his last hole the ninth.
"I came out with a much better attitude and it definitely paid off. I managed to play everything shot by shot and it's much easier when it's like that,'' he said. "It was pretty good golf. I had a lot of control with my short irons and I putted really well as well.
"I don't feel like I hit it a bad putt today. I rolled every putt where I wanted to and I got up and down when I needed to and scored well.''
Wilkin, who hasn't contested many tournaments so far in 2012, said he feels like he has been on the cusp of playing well but it hasn't all clicked until today. One of the reasons for the turnaround has been working with coach Marcus Wheelhouse.
Six players share fourth on a three under par total, three shots back from Hamilton.
Lochiel local Emily Perry continued to share the lead in the women's division after a two under par 70 in round two saw her atop with Lita Guo (Remuera) who shot the low round of the tournament in the women's field with a three under 69.
Auckland team-mates Celyn Khoo and mun Chin Keh share third on even par.