Training agility with a ball?

I’m about to take my dog for her first agility training session, the issue is the trainer there seems to be suggesting that you can only train agility with food, my dog isn’t particularly food motivated and is very ball driven, I have mainly trained her with a ball for this reason as it’s what she listens to. I was wondering if anyone has trained agility with a ball rather than treats or if it’s something that is better suited for food motivated dogs?