Stumbled on this picture in the Gallery; it took me some time to figure out how to get up on the rail to ride it… 
Key was wondering why it needed to be so high for proper posture when Mr. 57 fell from the rail- ‘I like to have time to compose myself on the way down…’
LOL! I can be so tunnel visioned!
-C
I don’t ride on top – yet… 
After I learned to mount, I stopped using the railing. A few days ago, I dragged it back onto the patio and started using it again. For learning to idle and go backwards. And to ride seat-in-front (which I think is a worthwhile exercise for a beginner – to learn to pedal evenly).
I’m also learning to do a rolling mount (without the railing). It’s not that hard. It’s exactly like a standard mount but with a few steps leading up to it (and a bit of timing). Woo hoo! 
uni57 (Dave)