This is, so far, the only field that we can keep Echo in - she jumps over or breaks through everything else! It has 3 layers of electric tape and this seems to revent her thinking she can squeeze between the tapes. All this houdini behaviour has not made me very popular at the yard...!
She's standing in her cute baby stance here - I have photos from when she was a yearling standing in exactly this pose, with her front legs splayed apart. I'll try to find one.