If you talked to shark experts, they would be shocked at the level of stupidity involved in the "determination" that this was a rogue or "bad" shark
I can show ( post a link) to countless videos of Jimmy abernethy and many of his guests from his boat, snorkeling with tiger sharks and bulls, with no problems whatsoever
Let's say you walk down a street in a rural setting, one KNOWN to have many big dogs on it...not really mean dogs, but a few that are loud and often approach people.. You walk by a big german sheppard, and the moment it looks at you, you freak out, get scared, and turn and run as fast as you can away from it...worse still, people TOLD YOUa that this is the right thing to do, if you see a dog....so the dog chases you, and bites you....
Are dogs bad? Was this dog specifically, a bad dog? Or, were you acting ignorantly, due to stupid advice, and this advice and behavior got you chased and bitten.
Run from a dog, they are likely to chase...it is known behavior...known to any with some sense.
With sharks, too many people are in the water, with the equivalent of a "run from dogs" behavior and knowledge set, when it comes to seeing a shark. They don't know what they don't know, and are like ignorant children, wandering the street--not knowing that cars could run over them and kill them...even though the cars to not actually "want to" kill them ( motorists).
If you are going to have snorkelers at a resort, where sharks are common in the waters, then maybe some intelligence needs to be infused into the staff of the resort, for watersports, so that this can run downhill into the tourists....
From the shark dives Abernethy does, in which all free swimming encounters..the clear knowledge exists that sharks can get curious, and often like to gently bump divers.....this is MUCH better if the diver has something in their hands, that they can allow the shark to "bump" into. You don't HIT the shark, you let it bump the camera or blunt pvc pipe, or whatever.
Visit this....
http://thisisyourocean.com/thefilm and watch the trailers..... If you watched the whole film, and then if you went on a shark expedition with abernethy. you would quickly realize how stupid the attacks on snorklers or divers are--attacks due entirely to our own ignorance, and the ignorance of others we trust to give us good advice.