One of the shops out west uses some coated wire (don't know the brand) for connecting the trailer hooks. I like it because it's stiff enough that it holds the hook in position even in soft water. It's also coated with braided material so it doesn't line the fish. If I can get some I'll post the brand.
I'm actually looking to tie some muddlers on waddingtons and that wire. Should be good as I find long shank hooks for large muddlers are a bit dangerous on the fish.