All these moves are very possible. It's just a matter of time before it becomes wide spread exposure. Before taking the foot off with one foot skid, you probably have to skid with your pedals at a different lock position. The foot that stays on will have to have a major leverage point which is at 10 - 11 oclock i believe. Try skidding with just one foot off at different positions that your used to. When you can skid with one leg over your bars is when you take your hands off.
As far as the 360 reverse one footed. I can do one by kicking the front tire back with the foot that's off but have yet to do it with strictly just the foot still in the clip.