Many bounty campaign give token..often token bounty has not been paid .. you already exist in the market .. after the price paid it down drastically ... if we hold the token .. later will be able to rise or even added down the price of token bounty
If you are participating in bounty and get reward in their tokens, then it is same as you buy their tokens. Instead buying with your money, you buy it with your efforts and time. In this situation, there is no different between you as a hunter, and investors. Both of them should hold their token until the token value become high, so they can earn max ROI.