Tuna have teeth is my guess. We have caught lots and never worried about switching to fluro, only time that would be valid is if you were expecting to fight the thing for hours i.e. spin reel on a 80+kg Yellow fin or any Blue fin over 150kg were the teeth have more time to rub through
Another thing to note with fluro is, once it has been shocked i.e. stressed after a good fight, its strength falls well below test rating, its almost a one and done type leader.
Bookmarks