I've actually done his and it works fairly well. Soak the line in fingernail polish remover. Acetone I think is the chemical name. Anyway then you will have to trim a little of the line back to expose the core. A pair of needle nose vice grips on the exposed core and pull. When I did it I found that cutting the line into about one inch long pieces worked much better. I use them for strike indicators. They are small but I found that casting with these are much easier than other indicators that I've tried.
Hope that helps,
hNt
"If we lie to the government, it's called a felony, when they lie to us, it's called politics." Bill Murray