Shedding blade like this one :
PetEdge: Master Grooming Tools Shedding Blades is more for short haired dogs. It is similar to the kind you use on horses...you just kinda rub it around all directions to get off loose hair. I don't use them at all on any dog...IMO there are much better solutions.
I am surprised petsmart didn't have a zoom groom! That is were I got mine.