Not sure I'm comprehending what you suggest Zubida

Here's a quick half-assed example of suspending it. tinyurl.com/y6svz7f7

And, if I do successfully suspend it, the clear line still takes on the background color.

I usually shoot them on a light table since the shadow issue is much less, but then the hooks, crimps, etc. all become silhouettes. Still painfully tedious to extract the clear line from the slightly off white background - I guess I'll never escape that chore with these things. I also have the issue of having to jury rig all my setups since the employer isn't willing to buy me much of anything. I wanted to get a non-glare pane of glass to shoot them on but got turned down on that too.

Very interesting idea. I'll try the double shot. I've tried hanging the rigs, it's very difficult to get the components to all face the right direction.

I haven't figured out a way to not have it resting on something which causes a shadow, that would be ideal. The line does need to appear colorless. I've shot it on grey, but then everything is grey which just goes into the shadows too. It looks really flat and dull once extracted and loses the clear line monofilament look. Here's one with the flat dull grey look, and another in the alternate images I miraculously managed to get it to look clear but it was some sort of fluke and still mediocre. I don't remember how I shot it that day. riteangler.com/product/cobia-rig