I bought galvanized sheets a few yrs ago and made a large variety of cage configurations. Triangular cages I use 1 plant in each corner. I also make 3ft x 7ft "pens" and various sizes of "stalls."
Here's a 3ft x 7ft pen that holds container tomatoes, anywhere from 8 thru 12 plants:
And here's a way to both anchor and EXTEND the height of your CRW cages:
You cut the bottom ring where it joins each vertical wire (only 1 cut per square) and then bend each down, from horizontal to a vertical position.
Hope this helps.