My guys have settle amounts, but if they are up they can receive their payouts at the beginning of any week regardless of their figure. Sometimes a guy just needs his cash whatever the amount is.
this appears to me to be the best policy... have a settle figure and/or a limit but let the clients cash out at any time... it is their money after all. It doesnt seem fair to force him to make more bets to try and get to the settle figure. In the same way that its not fair for a client to get down -$950 if their settle figure is -$1000 and stop betting forever and therefore not pay.
you have a settle figure for when the customer has to pay and you allow the customer to request payment at any time.