Anne, i love your idea of using the Masonry Ladders. I am going to run up to the Home Depot here and see if they have them. Here in Colima, we can't just go to the store and buy a trellis, wood will rot within a week, helped out by termites and certain moth larva, in addition to the weather so it is really out of the question. I wanted an arch for the garden and had an iron one made by a local metal worker. I also bought some chicken wire for additional growing space, but that stuff is lethal with little wires poking out here and there. I have a butterfly garden and sure didn't want to see butterflies impaled on some of those wires so i gave it to a neighbor. We can buy chain link (or cyclone) fencing but it is expensive and more problematic to install. If i can find some Masonry Ladders here, i think they will work very well.
for the idea