from the bit of contacting I've done recently (E-mailed and talked to a few breeders) - many don't have a list for placements (non puppies). Most have told me they have nothing at this time. Many don't seem to post (sometimes I see an older placement posted but mostly they are placed by word of mouth).
I will let the breeders say how they place but seems to be based on fit for that individual dog (if younger and good for active/sporting home they'll look for that, if looking for quiet pet home they will look for that). would the dog prefer all the human attention or have other play mates.