I don't agree with that. Our fair has that rule because of the expense with fitting. Add up how much it cost to buy a can of everything you need, not cheap! We have no live animal auction, just a premium auction that brings less than $100, if your lucky! Our kids are lower income, doing this for the experience (a TRUE 4-H project), and there is noting worse than having someone from out of the county come in with an animal that is glued to the hilt taking the whole show, when the county kids have worked hard all year at grooming and feeding and attending clipping clinics so they can properly fit without glue. If the outside animal is better than the local kids animal unfit, then it SHOULD beat everyone else. There have been NUMEROUS times when one of our local kids have beaten a calf that went on to win at bigger shows, plain and simple. People like our fair because it is one day, no overnight, and gets the calves some miles without being terminal. We draw a lot of people (our show typically has 70 to100 head each year). If you do not like the rule, do not show at our fair, it is that simple! As a parent, I like the no fit. Less stress on my kid and the animal.
You can hide a TON of faults with glue, but a blow and glow shows what they truly are - no fake hair, no fake muscle, what you see is what you get!