So I guess using a paper towel or six and water from the sink that does not clean up the seat enough to sit on? I had a girlfriend or two that mastered the hover. Germs are not all that bad when you consider the crap you ingest when eating most foods. A healthy immune system is a working system. Sterility causes more harm to your body than germs.
I use paper towels to open the bathroom door when I leave. I am really good at the crumpled paper towel toss. In China we had to use one of the squat toilets so there are worse things in this how-low-can-you-go world than our hover version.