Not many people might believe me but last year in march, I was fishing with the locals there and all 5 of us saw longtail busting up at that point. We thought only mac tunas were there but these fish were 6k kg plus. A bloke hooked up but his leader couldn't withstand the turning head of that tuna and nobody had any sort of gear that coulda landed em. They busted up for half an hour nobody said they had seen anything like it
I’ve definitely heard of them being there so I believe you on that. One of the reasons why I always take 2 rods with me just incase something a lot bigger is around.