Someone stole the license plate off my wifes car, the individual who took it was then involved in a hit and run on a sheriffs vehicle a few counties over. That was fun opening the front door to 4 policeman who were looking for my wife!
The difference is huge between a floor jack and motorcycle jack, the motorcycle jack will hold the entire tank as it has two support bars that are roughly 10-12" apart. No need for a second set of hands holding your tank, they motorcycle jack is perfect for it. When your done throw it in your living room, Ive done that for a bit when I didnt have a garage