Ooh, Wally, I am impressed - shame you aren't closer, and then you could teach us.
So it looks like I will have to have a circingle - which I don't possess, I just thought we could do it off the halter with nothing else, but not looking like it.
I like the idea of your poles in a square. I have to have either sleepers or telegraph poles to encourage him to pick his feet up in an E. However, I don't have either, but what we do have is the round fencing stakes. I was thinking of sort of putting two flat and one on top, but looking at your square where you have them balanced on top of the other two, that might lift it sufficiently to encourage him to pick his feet up.
He is so stiff in his shoulders he has two great lumps of muscle either side of the bone which is meaning he is not extending his legs out. Bless him, no wonder we tripped so often.
Any other useful tips from you all gratefully received. Will have to get friend to be up front woman so he gets the idea, and isn't subjected to my uselessness.