Had a similar sort of idea but using braided Alasticum or plastic coated gardening wire(which would probably rust after time). Tried using a head net and don't have areal problem getting bitten, just hate the little beasties crawling all over my face. I'm at a bit of a loss as to coming up with a way of fastening the Velcro shut from the inside without installing a zip,
I had toyed with the idea of just rigging a net under the Basha but then the little buggers would probably get inside the net anyway and drive me wild. Also the problem with using a full net is that I often take the dog along and as well as being a midgie magnet, I'm not too sure whether a full net would stand up to the rigours of a PBT clawing at it.
The ones like Snugpack might seem to have a problem with condensate as breath might gather on the inside.
Can I assume that from your posts on a similar subject that you use your system for CROPs work?
Phil.