Follow credible bounty managers. Mostly, startups rely on bounty managers with enough experience in marketing and handling of bounty hunters. You can check them out via telegram and bitcointalk. Been tailing some bounty managers and teams who has handled great projects.
Following the Bounty Manager is a good idea and it must be done.
I have also participated in various Bounty Managers and the most excellent is the Bounty manager who has the most members such as Amazix or btltcdigger.