Three words for you: Meat-flavored toothpaste. There's also a couple of products that are sprays, which evidently some dogs tolerate better than brushes.
There was an brief summary in the latest CG Magazine (CG stands for Celebrating Greyhounds) of some preliminary findings from a large study about bloat. Not the most scientific study -- I think it was a questionnaire of greyhound owners -- but still, it covered thousands of dogs. Speed of eating was not listed as a risk factor. Oddly enough, the dogs that were least likely to bloat were females who exercised (e.g., ran around the yard) immediately after eating!
Laurenbiz, I think it's hard to generalize about amounts of food. It depends on the individual dog's metabolism, amount of exercise, # of calories per cup in the food, etc.