I was wondering if anyone can rate the milking stands avalible for purchase. I keep telling myself that I should just build one but I really need the portability of the metal/foldable ones. I would be using it for my packers and trimming hoofs. How sturdy are they with a full grown 250lb goat on them? It seems like they would dance off the edges. I have seen some where you can get side rails for them also. Any recomendations would be great.