This design consists of two shooting pits, facing each other. You throw from one pit into the opposite pit. Then you walk to the opposite pit, pick up your boules, and throw them back toward the first pit.
I built it using 2x4s but I think that 1x4s would work. The white sheets on the ground are an acrylic material called Plas-Tek. They are used to line showers and may be available at your building-materials store. They come in 4’x8′ sheets, about 1/8″ thick, and cost about $30 each.
The pits are out-of-doors, so I raised the sideboards about an inch off the ground. That allows rain to drain off, and allows me to sweep dust and fallen leaves under the sideboards and off of the court.
When I pick up the boules I put them in a white plastic bucket on brick “towers” where they will be easy to reach as I throw.