Good bounty campaigns that pays are hard to find nowadays. Most are fake ico they only want to raise some amount of money and leave the campaign, and jump in to another project.
That's why before joining the bounty, you should always check the background of the project and decide whether that project can make any profits ahead. Also, always try to consider the demand for the project which bounty you are going to join because you only will have profits from the bounty tokens if those tokens are already in huge demand and uprising on any of the exchanges.
Two years ago nearly each bounty was been successful and making profits our from bounties was really much easier as compared now.