A quick thought.

I think the times when we have the most fun, and the best breakthroughs, are when I let my inner child loose and just do whatever goofy thing pops into my head, and let him think about what he wants to do too.  Yesterday I stood on that table you see in the video (it's my fancy mounting block) and waited to see what he would do.  He circled me a few times and then sidled up and asked to do the mounting up game.  So we did.  And then he started thinking about which direction he should offer to walk, and whether it was okay to do with me up there on his back.  The dogs were being totally crazy all around us so I hopped off after he took a couple very cautious steps.  Fun times!