The Lagina brothers have already found their treasure.
It is not at the bottom of the money pit.
It is in the heads of the gullible millions who think they can substitute their lack of historical knowledge with a "potentially significant" rusty nail. The same trick week after week, month after month, season after season.
These two clever chaps have got an army of addicted old boomers who think they are about to witness the last thrill of their life: finding out what was it all about.
It doesn't matter if there is a treasure on the island somewhere, the point is to always be just on the brink of finding it. "This season they will solve everything" the addicted pray. Like going to church to get your periodical fix of delegating responsibility for solving the mystery of life to someone else, someone with an elaborate story that can't be solved easily but promises to unlock something important, eventually. "Maybe we can keep them interested one more year" the brothers pray with each new season, and their prayer has been heard 9 times in a row already. I'm sure that at the end of this season they will be very close to solving it, again. Next year the same, the gods of TV ratings willing. And in the decades to come millions more will flock to the island to marvel at the altar of the "potentially significant" rusty nail.
The Laginas are digging in the hearts and minds of tv junkies and have already struck gold there. Congratulations!
Let the illusion of the almost solvable Oak Island mystery continue ad infinitum. Amen!