As part of my 2012 Southern States Tour, I took a boat tour of the Atchafalaya Basin.
We toured around the swamp on a small boat made for about 2 dozen people. We saw hundreds of alligators, some of which our tour guide threw food to, getting them to come closer for our photos.
We actually saw people on a small 1 person boat fishing. God knows what they would have done if they had fallen in. We also saw two tourists who for some reason had abandoned their boat & were wading back to the shore. I guess it must have been on their way out of the swamp that they broke down, if they had seen the number of alligators I had seen they would never have left the boat.