Bah, remove the lower end of the filler hose from the tank inlet spout. Just loosen the screw clamp and slide it up the hose a few inches and tighten it down enough to make it stay put, then use a large pair of channel lock pliers and grip the hose where the clamp was and twist it a bit to break the seal then remove the hose.
If you've got enough cash laying around to make your life a tad easier and not get a fuel fume headache, go get an inline fuel pump at the parts store for about $40 and a couple feet of hose for each end of it. Or you can get one at a salvage yard for just a couple bucks if you know the trucks to take them off of