Victorian fisherman Adam Solimo is now reconsidering the centuries-old superstition after reeling in a big one while dressed like - you guessed it - an oversize banana.

After five years visiting the NSW South Coast fishing, all Mr Solimo wanted was to reel in his dream catch - a mighty marlin.

On each trip, everyone would hook up except Mr Solimo. His mates joked, saying he was cursed with bad luck, and if he wore a banana suit it would probably turn his fortunes around.

And - yes, you guessed it - it worked.

The banana myth dates back to the 1700s, when trading ships carrying the fruit went missing at sea.

Now, some fishers are superstitions and simply don't allow bananas on board, believing they're bad luck. Others laugh at the myth - or, in this instance, put it to the test.

Mr Solimo's mates bought a banana suit online and made him wear it for the day.

"It was Sunday morning, my first day of fishing for the week," he said. "I was pretty embarrassed wearing it at the boat ramp."

The group headed about 55km out of Batemans Bay and were not quite at their mark when they saw a marlin jump.

After putting two lures out and trolling for about 10 minutes, Mr Solimo hooked up to a striped marlin.

"It was unbelievable, well worth the five-year wait," he said. "I have finally broken the curse."

It weighed in at 101kg.

Mr Solimo celebrated with a few beers and was spending the rest of his week fishing for a mixed bag at Jervis Bay.