Shark attack Mad Dog at Byron bay?

How can a leash be snagged on a shark enough to tow a big bloke on a board?

Why is Maddog – his shop always advertised on his t shirt and in the background?

http://news.smh.com.au/national/large-shark-drags-surfer-like-jet-ski-20080908-4c6l.html

and 49 other news sites – just google it