Ok, I will chime in.
My first ride in a King Air was a medic from Haines to Seattle burn unit. Fueling my boat, spilled some fuel, washed it to the back, went to pump it out- spark at the battery and BOOM!
The difference between life and death was my saying a profanity as the flames went from the battery 3 feet away towards and then around me- burning everything in it's path. My shout, though poor language, pushed enough of the flame away to stay out of my airway.
It still hurt. Lots.
It was not the liquid fuel, it was the fumes that ignited. It was a cool evening, fumes settled down into the hull, not up and away.
Was not the first time I fuled my boat from the tank in the truck, but reaching into the fire to shut off and remove the fuel nozzle from the tank, and then having to decide to use the one extinguisher to put out the burning fuel tank or the burning sleeve of the jacket I was wearing, (and melting into my skin), that was a lesson in one in one hundred thousand.
Did I mention burning skin is painful?
Cheap shortcuts with gas is not something I am willing to put up with anymore. There is a reason 'explosion proof' switches, lights and such are available for people working around fuels and chemicals.
However you decide, take a little extra care, and time. Buy a BIG fire extinguisher, buy three, to have on hand for your fueling area or truck. the normal bottle you see on a boat or car? That is just enough to maybe clear a 6' path in the flames to escape. If you have more than a 5 gallon bucket sized fire, it won't be enough. Have more than one, as I had to reach back into the fire to get the extinguisher.
I almost lost my medical permanently due to damage to my hands.
Fire marshal regulations are all written in someone's blood or charred skin. Please consider that it can happen to any of us.