Fuel tank vent in trunk

Back to the original question about the trunk flexing.....So I laid in the trunk and had my helper bounce the car up and down and side to side while I observed the vent canister, hard lines and mounting bracket and I don’t see any movement or flex in the trunk that I should be concerned with, we rocked the car pretty good too! Still, I like the idea of braided PTFE hose but for now until I get the parts it should be good to go
If you cut the braided hoses a couple of inches long then things can flex all they want. I dont think there would be much flexing anyway as you said.