I've jumped judged a few times now and every time it scares the beejesus out of me watching some riders go round!
Some are great to watch, others though crikey. On the weekend I had one girl who screamed before her horse took off over the fence, nothing was wrong the horse didn't stumble or anything, she just screamed

and another was praying to God to make it over the fence

Then you get others who try and set up every stride and the horse ends up whacking the fence on the way over and I mean WHACK the fence, several times I had to go over to make sure everything was still secure.
This was my last event to help out at for a while though so I will get a bit of a break from it.