I use these lightweight 10' panels originally
intended for a roundpen, braced every other panel with a t-post driven in
2'. Has survived being run into by a stallion, and is plenty visually
sturdy enough to discourage antics int he arena by whoever is being
schooled. The posts can be a bit much to take up again, but it is
moveable.
Steel corral panels, perhaps with a wooden post
set in the ground every so often that the panels are tied to for
support? Can't think of anything else that would be portable yet
sturdy. Good luck,
