What is the physical and social setting of the story, The Most Dangerous Game? What makes the setting implausible?

As the men on the boat are talking about the island around them, they call it 'ship-trap island'. It seems there is superstition about it similar to how people talk about the Bermuda Triangle. Things just seem to somehow disappear in that area. I believe the location or setting of this story could be allusive to that location.

It also seem that an area so thickly vegetated would make it difficult for a larger game (like a human) to not leave much of a trace. For the most part, the story paints Rainsford as a very evasive prey. Leaves, branches and ground would be easily disturbed by a human no matter how awkwardly and slowly the human had to move as if not to disturb anything.

Socially, it just seems strange that a Russian of that period would head to an island in the Carribbean.