Find good managers with a good list of successful bounties and take part in the bounty . For good generosity you should have a lot of knowledge about them.
In addition we must pay attention to the allocation and truth of the project. The success of campaign bounties is also influenced by the strength of the project. In other words, we must analyze carefully the project and the development team, whether real or false.
Sorry to say, but as i know there were lack of project that using real dev profile info's. So for me to finding real good project ico that will success enter the market is very difficult now. So it will affect to bounty coins/token price after. For me, i do takes finding bounty from reputable manager who managed it, so will not wastes time.