Yes, a lot of people do just that, no supports, just wire. I don't trust that here. We just get a ton of snow sometimes, plus, I want the pens to stand up to a bit of weight. Like chickens sitting on them, etc. from what I can tell, the farther south you go, and the more secure your yard is, the lighter you can build your pens. But it comes down to what you feel will work where you are.