I've never bypassed a game myself, but I have been studying how to for a while. I think the best way to practice removing Hack protection like PB, is to get a good test case, something with PB, but that isn't packed so it's easy to only focus on hack protection, then you literally have to go through and reverse the checks and find a way to patch them where the game still runs.
There's a lot more information on PB the HS I know, so that's a good thing, but you might have to look around on different forums. In most cases it's simply possible to build hacks that are undetected rather then ship your bypass along with your hack, which could mean your bypass gets detected more quickly.