Comp teams might buy the case of ribs,to find those that look/cook best for that one moment.
Depending on the type contest 18 slabs wouldn't be unheard of.
Even on the national circuits,we see a bunch of the same cooks and judges,and friends of friends.
We may be doing 1500 mile round trips,and packing up,clean and light is high on your list.
Health depts may let you give comp meat to friends,etc.Thus,judges,volunteers,police,fire dept,etc are all grateful.
We may have to "grab" a judge with a bite,or two,so we do tricks that you might not wish to eat a plateful.We might be in an area that is known for meat swimming in super,sweet sauce-or thin vinegar.Bad cooks,may hide bad meat,under lots of sauce.
The organization might disqualify a cook for pooling/puddling of sauce in the box.
In some sanctioning organizations,you are disqualified for painting your meats with sauce,because they can't see/taste the real meat.
Bill Milroy[Texas Rib Rangers] came up with the 3-2-1 method a quarter of a century ago,because he was vending/catering for thousands of people and he needed some control for his couple of turnin slabs.He figured,better to overcook,than undercook for the judges,and parboilng slabs could hold them wet/moist.If over parboiled,he could always tighen the slab up with additional naked cooking,to get it in the turnin box without falling apart.
There were countless cookers made from oilfield pipe,into long horizontal,offset cookers that could flow a lot of air and dry the product.If they didn't work well at flowing the air,they oversmoked the product.
Thus, you hear the slang 'Texas crutch" for Al foil,paper bags,pillow cases,burlap sacks,etc that could help out a poor cooker-or maybe cook.
Smokin' has made it his mission,that if the cooker can do a great job,as is,why not just learn how to cook on the cooker.
Yes,all of us have enthusiastically poured over forums of info that have grown like urban legends.
We agree,the $99 offset cooker special ,at the box stores,probably requires some of the old tricks.
Someone like you,is spending the money for a cooker where you don't have to do all that.
We often say,"if it ain't broke,don't start out tryin' to fix it"
Hope this helps a little.