I know sitting on the seat is a hard habit to start. One of my first public restroom memories was of my mom showing me how to cover the seat with toilet paper before sitting on it.
I gave up on TPing the seat years ago. Who has time for that? When you've got to go, you've got to go!
Nowadays, I sit on the actual seat. (Unless someone has peed on it -- then I find another seat to sit on.)
Here's the deal - I've never caught any diseases from a toilet seat. In fact, I don't know a single person who has caught any diseases from a toilet seat. I think that's a lie 16-year-old girls make up to tell their mothers. "I don't know how I got gonorrhea -- maybe from the girls' room at school?"
Let's have a Sit-On! Doesn't it sound grand? No more balancing in mid-air, gripping the sides of the wall, hoping you don't pee on your leg.
If you absolutely MUST hover in mid-air, let's remember the wise words I once read in a Howard Johnson's bathroom:
"If you sprinkle when you tinkle, be a sweetie and wipe the seatie."