Friend and contributor to GymnasticsCoaching.com Dave Adlard, Head Coach of Funtastics, Coeur d’Alene, Idaho, made a presentation at USA Congress 2007 entitled:
>>> Things we have learned building and hosting a Mega-Meet
That competition is the Great West Gym Fest which I have attended several times. It’s one of the best meets I know.

If you host your own (competition of any size) I would highly recommend you check out Dave’s Powerpoint presentation. There are dozens of great ideas you might steal borrow.
