I'm on those sites too. Are you doing both webcam and phone chat? Best way to maximize earnings is to get all callers to subscribe or at least follow your sospoilt page, so they get alerts when you are online and can tip and message you. The 85% payout on tips and subs is higher than most other fansites anyways, so worth doing in any case. I try to get all my tips on my sospoilt page and webcam and phone calls are also paid higher.
If you have an active sospoilt page and are promoting it, you have twitter connected to it and post often, you can get paid higher rates on your xpanded sessions too.