The guys at thw garage showed me a really bendable nickle-copper line. Tomorrow I’m going to the parts stores to ask about it. Not sure if my flare kits will work.
Ni-cop, you can get it in 25’ rolls or pre-made sections just like regular steel line.
It costs a little more, but you can tie and twist it into a pretzel shape without kinking it. Your double-flare setup is all you need.
I have heard you need to tighten the fittings a little more to get a seal.