I suggest every new projects team should do this if they want to introduce bounty campaigns for their project, doing this will limit the risk for tokens losing huge value because bounty hunters sell their shares.
1. Find good bounty manager
2. Give up only few decent allocation
3. Go for strong exchanges with no fake volume
4. Accept limited participants in your bounty campaigns
5. Introduce phase distributions
For the rest except no3 is easy to do, because that decision in their hands, but for no3 is not easy to choose strong exchanges. Every new project wants their coin listing in great exchanges but needs many requirements and if they come with low funds, he cants do it. That's why select low exchanges is only the a solution
I guess all projects do not want to spend much on exchanges that are asking for high fees so they always go on low exchanges. But still this is not a guarantee that tokens will not lost their value after the bounty hunters sell their shares. Most of the time, even if the bounty manager is very reputable, still the project end up unsucessful because the problem is in the project itself and not on the bount manager or the bounty hunters.