The Question and Answer section for The Most Dangerous Game is a great resource to ask questions, find answers, and discuss the novel.
Rainsford dropped his pipe and fell overboard. He then swam to the island. Zaroff manipulated the lighthouse light to trap ships on the rocks of his island.
No, not quite. In the beginning of the story, Whitney questions Rainsford as to whether animals more than instinctual fear. Rainsford tells Whitney that he's being ridiculous.... not to be a philosopher.
From the text:
Then a businesslike air animated him. "Ivan," he said to Rainsford, "will supply you with hunting clothes, food, a knife. I suggest you wear moccasins; they leave a poorer trail.