First, we need to look at what these buttwipes were fishing for in the first place. Swordfish....
Swordfish stocks are presently only 20% of what they were 40 years ago. (that's an 80% population reduction for those not savvy with numbers) Commercial sword boat catches have been tightly monitored for the same length of time and the average fish caught over those 40 years has dropped from 260 lbs. to 65 lbs.
Swordfish aren't large enough to breed until they reach about 90 lbs. and only the females go over 200 lbs. Every night, there's 75,000 miles of longlines out there indiscriminately catching everything that bites but swordfish are the target.
DOES ANYONE SEE A PROBLEM WITH THIS FISHERY???
Besides that fact these chumps were out there targeting the most over-fished billfish on the planet, they came across the shark and knew they wouldn't be catching any swordfish that day and (direct quote from the video) stated, "well, something was going to die".
For what it's worth, you need a permit to fish for HMS (highly migratory species) like swordfish, tuna, and marlin. And oh yeah, sharks are considered HMS as well.
So, first question, did they have the proper
federal HMS permit for their targeted catch?
Second, free-gaffing the shark was illegal.
I'm betting these guys broke enough laws to lose that nice sportfish they were fishing from.