Turns out the Taylor v. Taintor Supreme Court case from 1872 -- a ruling that, stripped from its law-talk, basically says that it's OK for people to be bounty hunters -- is used in many states as the be-all and end-all of their bounty-hunting legislation, despite it technically having no binding precedential value whatsoever. While bounty-hunting requirements do vary from state to state, it tends to be more about what color form (if any) you have to fill before getting your badge than what your required training is -- because there are no diplomas nor any training whatsoever that you legally need to practice the profession.
Not even a mullet.
Sure, there are bounty hunting "schools" you can attend, but even they themselves admit that they're pretty much bullshit. Just operate within the laws in your state, grab your favorite pair of leather pants and feather earrings, and find yourself a bail bondsman to work with and you could have your own reality show/Tony Scott movie in no time, provided the first criminal you put your hands on doesn't immediately stab a straight razor into your eye socket.