Reply to "What methods do you use to hold your wiring under the layout?"

I don't have a picture but they make a galvanized half-round pipe holder for pipe about 1-2" outside diameter. You only secure one side to a wall. They are used to hold pipe against a wall. Any big-box or Ace type hardware probably has them. I use them under my computer table to hold all the wires up under the desk. That way you can pull a wire down without having to thread a hole.