Nixter, thanks for the kind words.  My son and I were hunting with a very experienced goose hunter friend of mine, so I won't pretend have the answers to your questions.  It does seem like the key is both the decoys and the calling.  The picture of my son has a bunch of silhouette decoys in the background.  Sometimes he uses the full body decoys instead.  The lay-out blinds seem to work great, and they are quite comfortable as well.  He also uses two of the "flapper decoys".
Good Luck