I have decided that I want to ride backwards one footed. I can mount idle and ride one footed fine, and riding backwards two footed is fine too. When trying one footed backwards, i'm having a spot of trouble figuring out where to put my foot, and how to position the unicycle.
I'm still learning but getting better. You put your foot up on the frame, and make sure you have your back straight. Start out going slow backwards and once your nt foot comes to the top take your other foot off and press down with your nt foot. Make sure you leave off pressure before going across the bottom point. Also try it along a hand rail.
I can mount idle and ride one footed fine, and riding backwards two footed is fine too.
Can you idle one-footed? I can. I can't ride backwards one-footed though, at least not more than a single revolution and definitely not consistently. I've spent maybe an hour total even trying, and I started from a one-foot idle. Maybe learning one-footed idling could help?
For me, the only really difficult part is getting over the top of the stroke when moving backwards. Sem's advice via John sounds good. I'll have to try it sometime.