If sharks are the least of your worry, maybe you should read this
http://www.bigwatersedge.com/bwevb/s...ht=Great+white
That was not the only shark attack that week in that area. They believe it was the same shark in multiple attacks that week.
The guy in that story has major cajones and has already been back out fishing since the incident. But it is so uncommon that I would not worry about sharks nor orcas, nor anything for that matter. There is nothing you can do to prepare yourself for something like this except for maybe the radio. The ocean is vast, and there are dangers, but is that going to stop you from fishing?