Thanks for the reply Sookie.
Nope, I live in a very rural area and there isn't an obedience class for miles. For sit I first did the "put the treat in your hand and bring it over his head" method as that's what worked for my other dog, but Cú just went into hysterics when my hand passed his nose. I then tried putting some small pressure on his back and saying sit when he sat. I kept it to 10 minute sessions three times a day for three or four four days and got frustrated at the lack of results. In saying that though he took to walking on a lead like a duck to water and he never pulls ahead or misbehaves on walk.
I suppose I'll start at sit again today, he's one lucky dog that I didn't find him in the act of killing the duck -_-
I'm interested in what you said about a bond, can you explain that a bit?