I suppose our situation is a little different in that we are living aboard
but our nearly 3 year old malamute had to be tied anyway as my wife and I both work. As soon as we could, we got her a fake turf patch and placed it as far from her kennel as possible (and that wasn't very far). She began using it within the first day. Since we have put up the netting around the lifelines
, there's no longer a need to tie her up so we moved it to the foredeck and she uses it exclusively. Really no training was necessary except that she was tied near it to begin with, so consequently forced to use it.
Good luck with yours