1. Before promoting any bounty try to accept the fact that not all bounties will keep their promises.
2. Your research skills will bring you closer to new promising project, so don't choose bounties randomly or because of their allocations
3. It's better and safer to find bounties from high reputable bounty managers, they mostly keep their promises
You really noticed and told everything very accurately. But I can make a small amendment to your word. The Bounty manager can not always be a guarantee of the decency of the project developers. I personally encountered a problem when the TenTum project team deceived Not only the bounty hunters, but also the bounty manager.