Official entries should be limited to one, in order to avoid flooding the entry pool with one person’s tracks. It’s ok to make more than one, but only one can be your official entry that you’ll be judged on, that way someone doesn’t win by making spaghetti-entries (throw everything on the wall to see what sticks). There should be one, definitive track for entry. Others may be posted, but you must declare which you’d like to be judged on. That’s what I think.