Hippo,
I loosen and then swivel my Tbars forward, and then unscrew the two hex bolts holding the gauge bracket and hang the gauges down the left front side of the tank. Then am able to lift the tank normally.
I was contemplating doing what Tom practices above; however I am normally working solo on my bike, and I would find it hard to remove the rear tank bolt, and then try to manhandle a nearly full tank of fuel while attempting to line the bolt back up for insertion and trying to keep it raised at the same time. I "guess" that I could do it but haven't tried.