Kind of been off this site for a while. It's nice to be back on.
If you guy want to try and make your own spreader bars, the best bar material I've found is Solid Nylon Round Bar or Poly Carb Round Bar. You can locate this stuff at Aircraft supply stores or plastic companies.
Poly Carb Bar is probably your best bet...it's almost clear. That stuff will not break, its semi-flexible and light. Perfect for all fishing conditions.
Anthony