If it is a show I am hauling into and not stabling, I often see if I can walk the course before I unload - particularly if my first jumping class is the first class of the day.
I like the idea of filling an new empty gas can with water! Not all horses will drink strange water, it is easier on the human and it is way more sanitary!
Great tips! Will definitely try to use these tips if I ever have to go compete at a horse show alone.
One can buy a container specifically made for water. Check the camping section! Then someone at home won't mistake it! Another idea, if you show at the same place and the shoebills are the same for every shows, take extra home and fill them out before the show. Or make labels pith the information (rider name, horse name, address) . Did that when my kids were in 4H. Saved a lot of time.