"Coupling" a clutch hard line

Has anyone done this successfully? Any opinions on whether to do this or not?

I had to replace the flare nut for the clutch master cylinder and cut the flare off the tube to get it off. Now when I try to flare it, the flaring tool needs space to get around the tube and the new nut won't go down far enough past a bend to allow the room.

A friend had suggested cutting the line further down, flaring it and coupling another piece of line to make up the difference.

Not sure if I want to do this, or just buy a whole new line from the clutch hose to the m/c.

Thanks for the help

Bill