Which Hands Should Be RFI?
As previously mentioned, hand selection and range construction are the first key components to developing a strong RFI strategy. Given that folding yields an expected value (EV) of zero, you want to choose to raise with hands which will have a positive EV.

Below is a chart outlining the RFI ranges for a 6-max table (taken from our free preflop charts), assuming effective stack sizes are 100 big blinds:

Little and Alex Weldon are wrong calculating how much the bounty is worth based on the starting stack.

Ben Yu is right:
https://www.cardplayer.com/cardplayer-poker-magazines/66301-anthony-zinno-28-9/articles/22369-knockout-tournament-strategy-part-i-calculating-the-value-of-a-bounty

I realize there are a lot of poker players skeptical about the value of poker tells. But I guarantee you that you can make or save a good amount of chips just by keeping an eye on the player directly to your left.