They kept a boat at Dauphin Island. Prior to the storm, they took the boat up the bay north of Cochran Bridge to ride out the storm in the delta. By all reports, this was fine and was actually a pretty good place to wait it out. When they returned to Dauphin Island and entered Mississippi Sound, they saw "several" bodies in the water. They also saw bodies hanging in the trees on the Bayou La Batre side.
If it is like this so far away from the heart of the storm, the original post relating to the MS coast is certainly not farfetched.