I tried to post a reply earlier but I am rubbish with computers,so here goes again.
1-With a heavy duty stapler,staple the top and bottom cord of the net into the dowel where you want it,use 3 staples.
2-Place a blob of super glue or Araldite over the saples and cord,let it dry.
3-Get some heat shrink sleeving (as used to put over electric jonts on cables) a little larger than the dowel,slide over the cord and staples,you dont need a lot only about 5-8cms.
4-When you are sure the cords and sticks are in the right position heat the heat shrink with a heat gun,it really binds aro