There's not much we can do, now there are many fraudulent projects and many bounty hunters don't receive rewards, unstable cryptocurrency situations have an impact on all, projects fail, lack of investors makes us have to be more careful in choosing a project, we have to be more observant in learning a project
No longer an easy task finding good projects that will pay for their participants, like what you have said, there's no way for dragging them after they did not pay the rewards that supposedly allocated for the hunters, the scammers are free to go away with the money and enjoy all those money that most of the bounty hunters are waiting, payments that they've deserve since they've done doing such task.