I just made up some spare Cam Battens for my 12m & 16m Vegas.
www.seabreeze.com.au/gallery/gallery.asp?imageid=2458
If anyone is interested in making some, I used 3mm electrical heat shrink and 2-2.5mm fiberglass rod available @ Kitepower Sydney.
Matt
If you use the twin-walled heat-shrink (the stuff with the heat-glue lining on the inside) it wont ever come off, and will present a nice thick end to your batten that is less likely to ever punch through the holder. (Available at Jaycar and Dick Smith etc)