ARP poisoning, DNS spoofing, and one of the best ways to hide yourself is disable the AP feature that logs your MAC address. But bare in mind that even if you disable it, or change you MAC address frequently, you can still get easily caught.
I don't know if this will work OK as I only tried this once, but you could change you MAC address to one that's already connected to the AP. Hiding by disguising yourself as a legitimate user.