Right off www.chitownseries.com:
3 - D2L teams are required to submit their entry 7 days in advance of the event. Should we receive the entry any later there is no guarantee a space will be available.
D3L teams must have their entry in no later than 3pm the Saturday before the event.
3-Man Young Guns must have their entry in no later than 3pm the Saturday before the event.
4 - No registrations for any division will be accepted at the door.
So... it depends on what division you're playing in; but in either case, you CAN NOT
pay the day of the event.