Hey, Phyllis. I was playing around the other just (yesterday, actually, after Disc 6 legs) and wanted to try something that I thought of. Instead of using paper plates, you can do those moves on one leg, elevating the other leg (the leg that should be sliding) and keep it elevated for the whole move. Talk about a balance challenge. Also, you can use a med ball under that foot and sort of roll it back or sideways as you would a plate. Don't put all your weight on the ball, though, just kind of use it to balance and lightly roll it back with your foot. (I don't like this version as much as the balancing 'act', though, because the ball doesn't really allow a lot of movement like the plate does, but it's an option.) As I said, I was just playing around when I was done (I am able to use he plates, fortunately, but I was just experimenting.).
Gayle