I trained him to long line and to pull stuff, then we had an incident with pulling the tire that went really badly, and we've only done it sporadically since then. Maybe when I get them at home we'll have more time to work on it. There's so many things to do with him and not enough time to do them all.Thank you! There are a couple harness shops nearby but I will pass that info along to my wife. She is using borrowed equipment now but eventually will need to buy. I didn't know Pony pulled a cart. Is that in your journal?