You hit it right on the money! I had that idea before too after watching some show where the great whites were just blasting a dummy seal. They were just trolling it behind a boat and I thought, tie that thing to a rod and real! How awesome would that be to land a great white shark like that? Watching him explode on the seal and then fight that beast!

Here's a video I seen today of a guy fishing for marlin on a jet ski.

http://www.youtube.com/watch?v=LNAJw1IOtcM