Before our 1st comp, we did 2 overnight 4 meat practice cook all the way down to the Mrs. doing parsley boxes and having ALL turn-ins done on the KCBS turn-in schedule.
It helped a great deal.
As said above, make a list of everything you use in your practice cooks and when you find out you need a simi to haul it all, trim down to what you NEED and not All the stuff you think you need.
Good luck and hope you hear your name called. ( then you will be hooked )