Great pictures.  I found this piece of dowel rod and tried the woomera with it.  Thrown by hand I made a distance of 16 paces.  When I tried the woormera I was lucky to get 4 paces that is untill I cut a notch in the dowl as in the picture.  Then I threw up to 50 paces 

  The only problem, by now the pine resin was braking up being far too brittle only after about 4 throws.  I have now ordered some Dammar resin.  I would expect ongoing repairs but the orignal resin must have lasted more than 4 throws.  Any answers on the resin?