At Pit Bull you need 200 impossible-to-get comp points to cash out. Here's how you get them.
Ring games:
The pot must be at least $20.00 to earn 1 comp point
The pot (s) must all be not less than $20.00 and total $4,000 or more to earn 200 comp points
Tournaments / Sit & Go:
$.25 in fees earns 1 comp point
The buy-ins must be at least $2.50 and total $500.00 with fees equal or greater than $50.00.
You can read about Pit Bull comp structure at their site.
http://www.pitbullpoker.com/poker/club/club_home.jsp