This is a common thing that hunters hate and they always complain about it, and yes we are tired of reading threads of complaints about bounty injustice (according to them) in this forum. I don't know if you've ever thought about this, but you as a manager old enough should be able to fight this common thing.

The bounty hunter's entitlement is full payment as per the initial agreement, not just a few % in the hope that they will gratefully accept it.

More precisely, there is no more warning of selecting any bounty with project tokens payment because basically the hunters has 2 worst consequences, the token is worth $0 and is not paid. Hunters just need to decide whether to stay with the profession or quit right away and then develop themselves to become more professional in order to get jobs at the rates they want.