Former Survivor contestants Boston Rob Mariano, Parvati Shallow, Sandra Diaz-Twine and Tony Vlachos sit down to discuss their winning methods and the tactical moves that led to their success. Hear about the necessity of certain 'Survivor' strategy elements, like the 'spy shack,' and how four distinct approaches resulted in victory. They break down their strategy tips for the upcoming 'Survivor 50,' offering insights on how to win and what to keep or cut from your game. For more from Parade's exc