Are the carbon fibre rods simply punched into the terrain or are there proper holes drilled. If they're just punched in (and if so, I assume the base is some kind of foam?), won't that eventually make mincemeat out of your terrain?
The boards are made from ordinary white insulation foamboards (Expanded polystyrene 120cmx60cmx4cm). We just punch the rods, which are sharpened in that end, directly in and the boards are amazingly resilient. The flexibility of the foam also makes the holes punched close a bit again when you remove the mounting rod.
We made the boards in 1994 and they have been used for (literally) over 100 games and have been moved a lot of times in the back of a car. We gave them an overhaul last year - some new flocking, new paint and a bit of expandable foam to stiffen the backside of one of them and they are good to go. No reason to be sad...

Here they can be seen when they were new . . (and I was slimmer, had no kids/lots of time and Ace of Base was on the Billboards).

They look a bit more crisp, but then again it is 18 years ago (and the rods were made of piano wire, the rules were crap and the planes made of balsa wood and cardboard)...
- Svend