Making your own clear Polycarbonate Lattice
This is basically the finished product. It is guaranteed for five years, fits discretely on the fence and doesn't rot, need painting and isn't prone to termites. A 3mm thick, 2.4m x 1.2m sheet is $99 + GST.
I always wanted to get some lattice for the flower and grape vines I wanted to grow along the fence in the garden, but could never get around to buying them either for a lack of funds or transportation space in my car. Solving both problems I decided to use leftover polycarbonate sheets, cut to the height of my fence. I then drilled 6 cm diameter holes into them to create my own lattice panels.
Being transparent, I also figured that they would be ideal for letting me view any grapes that were growing behind the lattice in the future.
Finally I mounted the polycarbonate lattice onto the wooden fence beams with screws and trained the young vines to grow through the holes. The 6 cm diameter holes would also be large enough to allow me to pick any grape bundles that were behind the lattice.
In a couple years I will update you here on how this all worked out.