something else - do extensive work with obedience
your dog in agility needs to be working at full speed with you at full attention -
they must stay where you put them so you can set up the beginning of your run
- rather than just chasing them around the ring trying to fix what is happening (it happens and it is often a trainwreck)
in most trials you have to have your dog stop at a "table" and the dog must sit or lie down and stay there for a set number of seconds (this is very very hard for the dog that just wants to go)
An immediate response to your command is required as these are timed events (and you don't get any extra time!)
(my dog failed to qualify on a course because she was
1/100th of second over time
in our classes we required the dog to sit - stay, down - stay, come when called before the dog was allowed to move on to the second set of classes
now when I say obedience - I don't mean competitive obedience heeling but the attention work really helps.