This could be 'my dog specific' but here's my experience:
I had a dog, Ibis, that was extremely food motivated. We have light gray floors, so anything dropped, like a piece of kibble, was immediately snatched. She learned if she didn't get it, someone else would. So, she associated a small dark spot on grey flooring, food. Not really a problem at home, but she was like your dog, including at shows I took her to.
This went on until she was about 2 when we got to a show early, like usual. The show flooring was concrete, there was a 'turd' and Ibis snatched it. She spit it out immediately and to be honest, though I continued to watch her as much as before, she never did that again, except at home.
She continued to be extremely food motivated, which is why I never lure coursed her, except ONCE. I took her to a trial in which my other dogs were entered. At the end, there would be a practice, so, I entered Ibis in that. She was a very observant dog, but I figured she liked to chase things, let's see. We were at the line, she wore her pretty color, and ran 10 feet when I released her. Then, she made a beeline to the LUNCH counter. It was at least 75 ft from where I released her, behind us.
One thing she continued to do, was chase any little critter that moved - just at home, the only place she had an opportunity. The other dogs knew not to pursue a skunk, but Ibis had to learn by doing (her usual way of learning things). Did you know skunks can climb 5 ft privacy fences? Ibis thought that would be the perfect time to grab the critter. What she didn't know was that was a prefect time for the skunk to spray her in her face! We were lucky it didn't affect her eyes. She never did that again.
I guess this story shows examples of understanding the dog's African history and showing that it's part of who they are. You have to be constantly aware of what's going on, and sometimes if you can't change the dog, you have to change their surroundings.
Ibis was the most work, but I sort of miss her the most, and really worked at filling my free time when she left!