Like Smokin' says,the first bite must grab them.
Also ,the cooks at that level are so good ,and close ,that 0.00001 of a point in 180 could decide the category.
Everyone scraps for every shred,they can think of.
If I am practicing for comps,at home,I try to do it all just like the contest.
Like the others say,If I'm cooking a case,I just load 'em up and close the door.