Hay and his three mates, skipper Carl Fairey, Andrew Young and Bruce Moroney, headed out from Napier on Monday afternoon, having noticed good conditions for potentially landing a big one.
The crew anchored near the Rocket Lab base in Mahia on Monday night, then headed into deep waters early on Tuesday.
Hay said they had a system by which all four anglers had 15-minute turns watching the rods and, if a fish was hooked during that time, the respective angler took charge.
“We trawled for six hours, then hooked up.”
It was Hay’s turn. For the next two and a half hours, he reeled in the big fish.
“We had it right up to the boat probably five times before we actually got it.
“One particular time, it leapt right out of the water, which was pretty amazing to see a fish of that size.”
He said he was pretty shattered by the time they got the fish onto the boat, and there was no way he could have done it alone.
“It’s not an individual sport at all ... if you haven’t got all four people working together, it ain’t going to happen.”
Fresh tuna can sell for big money, but Hay said he had no interest in selling any fish he caught.