D2 recruiting is sort of a three layer cake:
Lowest layer: low vision = battling SIMs. This is actually pretty easy because you know its just SIMs. Not many head to head battles.
Middle layer: improved vision = mix of SIMs and Humans. This is the toughest....the top 5-25 coaches will also be seeing the same guys and you will have to be good to get a good class. If you go after SIMs, expect some good humans to be also looking at them. If you go after humans, expect a battle.
Highest layer: good to great vision. Here it is mostly humans and starts with a lot of undecideds. Lots of human battles, but also lots of fallbacks to choose from. It gets much easier at this level.
For specifics on how to do recruiting look at the pinned thread about how to approach the task of recruiting.