Most sharks are legal to fish or bowfish for on the coast of Northern California. We've shot sand sharks and leopard sharks near the shore but we use the chum out in the deeper ocean to attract blue sharks. Basically one gets a five gallon bucket full of frozen chum, ties some floats to, punches holes in the sides and tosses it overboard. Then drive your boat as far away as you can within sight of your chum bouy and set out another one. Drive again and drop another bouy to form a triangle. In the time it takes to get from bouy to bouy there should be new blue sharks coming up to investigate your chum.
To shoot the sharts we us compound bows, but rather than a stabalizer on the front of the bow, there is a little basket that a bleach bottle can slide into. The bleach bottle is filled with the kind of foam that one uses to seal cracks, the stuff that expands and then hardens. There should be enough room at the top of the bottle to fit a coil of strong string. The string is connected to the arrow which is also fitted with a razor sharp broadhead. Once the shark is shot it takes out line from the bottle and eventually pulls the bottle under water. The shark tows the bottle around until it gets tired, then the bottle will pop back up to the surface. If its a small shark one can pull the bottle and the string aboard and gaff the shark, pulling it into the boat. Blues are usually much bigger however and must be shot multiple times before they can be landed.
My dad has participated in tournaments off the coast of Eureka California. Prizes are awarded for most sharks, greatest total weight, biggest shark, and most species of shark. Stingrays and a large fish called a mola mola are also taken in this manner.
Great While sharks are an endangered species and may not be taken. Did you know that world wide about 6 people a year are killed by sharks? Well 10 times that many people are killed by falling coconuts! Coconuts just don't get the press that sharks do and they certainly wouldn't make for a very exciting movie.