From: "Gerard O Connell" <goconnell@dodo.com.au>

I purchased two pieces of balsa wood, some weatherproof material then cut the wood to size and took it to a dress shop (an upholsteror or similar would do I'm sure) and asked them to cover the wood with the material joined each end by some elastic webbing. I use this lightweight device to secure the rudder. The ailerons and elevator are secured by using the seatbelt around the control stick.

Let me know if you want a picture
--
Gerard O Connell
Melbourne, Australia
VH-LPD (LNC2)