Hi! I have a Check List, I always read it twice to make sure I have everything!
But there was one time that when I was getting on the horse, the zipper of my boot opened.. I had to improvise, took some Vetrap bandage around the boot and it went really good, I won that class, it was amazing 😅
Basically that's it, have extras, have material so you can improvise just like I did!
Hope it Helps
You should always try to have extras of things in a trunk in your trailer just in case, even if they are old and don’t match. But if you don’t, try asking any friends that are there and maybe some other people showing too. To prevent this try and make a check list the night before to make sure you have everything. I suggest doing it in a piece of paper and crossing everything off when you put it in and then checking everything again before you leave.
If no one has what you need then you have to improvise or you might not be able to show.