Bounty's profitability entirely relays on the sort of bounty campaign you take part in; besides, you should take into consideration the practicality of the bounty-related project.
It will definitely depend upon the real growth of that coin and its demand in the near term. It is possible that the in the PRE ICO or ICO stage the demand would not have that much but considering the growth once its get good listing and having the strong team and great management can make the difference and that coin can give you great returns in coming time.