How to deal with paranoia about fuel leaks

Aeroquip's hose for these fittings, FC332 hose, has a woven layer in it that acts like a "chinese finger-trap". The harder something tries to pull the hose off the fitting, the tighter it grips the fitting. The trick to assembly is inertia, cause the hose to bulge from compression and it slips over the barbs easier. I won't say easy, because it isn't.