I just saw a tv show with a dog trainer who addressed these issues. The trainer did suggest feeding the dog pineapple because it did something to the taste of the poo. For a dog that eats too fast, the trainer had the owner pretty much hand-feed the dog just a little at a time so the dog couldn't wolf down an entire bowl of food at once. I'm not sure how that helped teach the dog to eat slower and less frantically, but it did.
Erica
Erica