Outstanding! Unfricken' believable! You've already caught so many other trophies e.g. tuna, dorado(mahi-mahi for you Hawaiians), and wahoo, to a add a black marlin to your list is epic.
Excellent video.
That seems like a perfect size for a kayaker to land on their own, fits on board, and you don't diminish the larger breeders. Although much larger than that, and you'd have to cut him in two, and have your buddy bring in half.
That'll feed many family members and friends
