HHUUUMMM, maybe I just learned something. She said cavaletti's. Would you have understood that to mean "raised"ones. I thought cavaletti's were just on the ground.
Becky
You can mount your poles to crosses, and still turn them around to get lower or higher, depending on the length of the crosses. A little less than knee high would be as high as you'd want to go and still have him just walk it. Higher than that is probably too much. He'd likely want to jump it.