I think the number of participants for each bounty should be limited. Such a restriction will benefit many subjects.
*The amount of prizes to be distributed will be kept constant, and the number of prizes will be higher per participant in bounty with fewer participants. In this way, such bounties will become the first priority for bounty hunters.
*Due to the small number of participants, the control of fraudulent detections can be made easier by the managers.
*In a competition where there are normally many participants, the total amount of prizes you won will not increase much if you make even a lot of effort. However, if the number of participants is low, those who make extra effort will work more and more effectively because they know that they will get their efforts.
*In short, the lack of supply will increase demand and this will lead to an increase in value.