Thanks Tony,

I actually asked about floods, and they said no because some of the dogs may not tolerate it.

Some of the lights were brighter than others and the lighting was really uneven so the ring was almost "dappled." Most of my good shots came from one bright spot in the corner farthest from me, so today I'm taking a longer lens on one camera and using a higher ISO to make up for the aperture change.

I was also switching manually between 1/250 and 1/500 depending on how fast the dogs were going at the moment. I may experiment with shutter priority today instead of manual.

I did manage to arrange some time after the competition today to do some flash shots of parts of routines. Since they don't count at that point, it's OK if the flash distracts a bit.

I'm also doing portraits once the event is over, so things will look up I'm sure.