There are baffles in the fill tube that make it a bit of a challenge but it's a lot easier (and quicker) for someone who wants to steal gas to just drill a hole in the fuel tank.
I've seen siphon tube kits made of a stiff but flexible tubing (sort of like PEX tubing) that can sneak past the baffle on many vehicles. I was wondering if anybody here has ever had any luck with something like those. Or does the tube get hung up in the elbow portion ?