The Most Dangerous Game

If Rainsford was to take on the game of hunting humans, how would another human be able to get away from him?

This is assuming that Rainsford would take over after the demise of General Zaroff in "The Most Dangerous Game".  There is no support for this idea within that story, and Rainsford is appalled at the idea of hunting humans before he realizes that he is the next target.  However, if he were to "snap", so to speak, the only way to get away on an island that he now controls (after the death of Zaroff) would be to either outnumber and kill him (that would mean that a group would have to be shipwrecked), to outsmart him (which would be highly unlikely since he wrote books about hunting), or to find a means of transportation off the island (Zaroff must have had a boat stashed somewhere).  Option three sounds like the only plan that could work against a hunter like Rainsford if he were to go off the deep end and behave like General Zaroff.  Again, this seems to be highly unlikely, though.