Problem
Bounty Hunter is comprised of Target pking and Rouge pking. However, the vast majority of kills you collect comes from target pking (over 99% from my record), as that is how you can benefit from the reward system. Rouge pking is unfortunately an outlet for ragging and is pretty much only used by players dumping special attack and running away.
Solution
Add a toggle in the lobby which lets you choose if you want to participate in rouge pking. Turn the toggle off and you only play the target game. This would add tremendous quality to the play experience, especially for players who are looking for honest and good battles.