That picture is just above where anybody but a recreational fisherman would take a boat. This is right at Delta Marine, they have the last business upriver. They net the mile or so below this spot but usually only at night.
Sometimes they sleep in though, I think it was two years ago that they blocked a cruise ship in the east waterway for over an hour while they waited for a native to come pull the net. It made the news but I'm sure there was nohing that ever came of it.