Coconut fibres
I call bovine droppings on the whole "Looks! We founds teh coco nutz fibers" hypothesis. Just because the show claims those are coconut fibers does not mean they are actually coconut fibers [see "deck spike"].
Do the producers/editors really expect us to believe that the pirates found some island near present-day Nova Scotia, traveled some 2,000 miles south to find the fibers and traveled some 2,000 more miles back to Oak Island in order to make some "box drain" filter? Really? So the pirates thought, "Hey, since there aren't ANY islands in the Caribbean where we can bury our treasure, we must return to the island of oaks." Yeah, that almost makes sense...almost.
---------------
work is for people who don't surf