As stated above, if you are fishing the tournament you need to camp the night before to be there at blast-off. Unless you think an arrangement can be made with the park staff. Fishing at night is not a problem, but once you leave you can't get back in until the gate opens at 7 am. I think that with the distance that most people will be driving, they would want to camp just to keep from have to get up too too too early.

The attendant did tell me that if you're camping and leave to eat or something, you can get back in by pushing a button at the gate that alerts park security to come let you back in.