This guide was not written by me, and I claim no ownership or part of creating it!
Now that's out of the way. I tried to do some research on Bouncers when I became one, and this guide helped me a ton. It's made for the Japanese version of the game, but it should still work here. And at the very least, can give you a good idea of how to possibly play one.
https://pso2.arks-visiphone.com/wiki/User:Ryutensei/Bouncer_Guide