In FL, all Hammerhead species are now protected (as are tiger sharks and many other popular 'sport fishing' sharks). You must release them as quickly as possible and cannot kill / take them. Posing for a picture of a bloody animal isn't releasing it as quickly as possible. Hanging them by tail or head is going to kill them. The local 'shark fishing club' is also taking a lot of flak for pics of members with protected sharks not being released right away. The only thing killing sharks in the wild is man.
When Mark was in the hot seat for the hammerhead with Rosie O'Donnell awhile back, his comment to the press was something to the tune that he is 'Only one guy with one rod and reel and only kills one shark a week'. He claims he is not hurting the population. In reality he is a guy who takes out thousands of people out with the goal of catching/killing sharks with more fishing gear than your local bait shop. When you look at his website and media, it paints a picture of a guy who catches and kills as many as he can. One of the two is a lie. It can't be both ways.