Ordinarily, this thread would be destined for one of the "wrenching" forums, but . . . since it applies to all generations, I'll post here.
On ADV, someone (will post attribution, when and if I locate origin) suggested placing a WASHER on the fuel tank petcock nozzle ahead of the fuel line hose.
This trick, 1) Eases the task of removing the fuel line, minimizing the twisting, stretching and pulling, the struggle to get a grip on the hose, and 2) Provides some protection from separating the press-fit fuel fittings, by offering a concentrated, unified force opportunity when removing the hose.
Oh, you didn't know the fuel fittings were press-fit? Yank on a stubborn fuel line, and . . . you'll find out!
Here's a washer shown on a fuel tank petcock (at 3:00 in the image):
Regrets if this hint is well-known and obvious to the experienced and skilled; it was not to me, and thus I share it.