I understand why they added Wilson to the script and I think it was necessary but I am not sure I would do that myself.
The cave makes sense initially but he never really improves upon it. I guess I am thinking of all the stuff they built on Gilligan’s Island (which was fictional of course). It just seems like he should have built more stuff…perhaps build a hut, a bed frame, table etc. inside the cave.
Also, he was there four years. He could have started building a raft in the first month and had a much nicer raft than the one he used.
I still like the movie. I just think if it were me I don’t think I’d have a Wilson and I would probably build more stuff somehow.
I would make a water desalination collector, a fish weir trap, and a sea salt collection setup. With water, and food, I could survive fairly well. Then I would add some safety and comforts to my island life. I would only make a hut if the cave was uncomfortable. I do very well alone. Better than with people, for the most part. Wilson would be a float buoy.