I just hung my first set, they seem really sturdy. The're the most generic square tubing kind, but not too heavy to take a reasonable distance. I think they're "Rivers Edge Grip Stick Climbing Stick". I've used an additional ratchet strap because I'm paranoid.
I only have the stand up at about 9' which makes me feel a little bit more at ease, I'll add the 3rd stick soon enough.