You can take off the left rear tire, remove the fuel filler at the tank, and put in a syphon into the tank. At the neck of the tank, there is a spring ball valve to close off the tank in case of a roll over. It'll push right out of the way. Of course, this will only have access to 1/2 of the sadle tank.
The speed of light is faster than the speed of sound. That is why people look smart until you hear them speak.