Go to a local florest and ask for the netting they put over the flowers for shipping. I think they call it florests netting or something like that. It is delicate and stretchy to go over the flowers without damaging them. Most florests just throw it away and will be happy to give you some. It works wonderfully over the cones of threads that unravel easily.
Opps, edited. Sorry just read your last post and you said you don't have much luck with netting. Never mind.