Desert Divers has some pretty good maps posted on their website of the ferry boat wreck. A fisherman could get a good idea of the challanges of this site by studing the topography. I would post the map, but I would need to get permission first.
They also have maps of other SC sites. A team of divers travel under water to record the depths and conditions. No easy feat. The data is then compliled for the finished product.
