When they filmed the Skeleton Coast episode, local tour operators were contracted to bring in "props" from Walvis Bay, the piece of rope, washed up rowboat and so on. The tyre tracks in the sand was raked over. The areas where he started walking at sunup, (which is quite late in the morning at our west coast) and ended up at noon is actually almost a 100km apart. The apparent "heat exhaustion" would have been difficult considering they were 50 meters from the cold Atlantic with the breeze coming from the west 99% of the year.
There is NO fresh water in that area, except for the riverbed seep pools, so the little puddle he "found" came out the back of a certain light brown Land Cruiser with Swakopmund plates on. They slept in four star luxury after a four course meal at the Cape Cross Lodge, and were flown in and out by helicopter, leased from an oil/gas exploration company. Catering on site was also handled in a fashion far removed from a bit of rotten seal. The chopper pilot I also knew well and his phone was confiscated for taking pics. They had to sign a hou jou bek agreement, but we all know how that works ou