That's the story I don't want my wife to read! Bull and sandbar sharks: The people who got eaten in 2001 were eaten by one bull and one sandbar shark. Still think they are harmless? I read that the bull shark is the most agressive second only to the great white. You should be safe anyway in your yak unless you fall out or reel a big one up close to your boat. If you get one and you really want to keep it, paddle in to shore with it on your line and land it from the beach.
Tom
Tom