If you want to cut down on the leakage you can wrap the butts tightly in plastic wrap, buy I really do not get that much leakage. I put the meat in a plastic garbage bag & try to get as much air out as possible & tie it tight.
8. All competition meats shall be inspected by the Official
Meat Inspector during the times established by the contest
organizer but not prior to the day before judging. Once the
competition meat has been inspected, it shall not leave the
contest site. Cooking shall not begin until the competition
meat has been inspected by the Official Meat Inspector. All
competition meat shall start out raw. No pre-seasoned meat is allowed other than manufacturer enhanced or injected products, as shown on label (EXCLUDING (but not limited to): teriyaki, lemon pepper or butter injected). When the
contest organizer supplies the meat, the contestant is not
required to enter only that meat. (Competition meat not
meeting these qualifications shall be disqualified; given a one