I was looking online and there are some shoes for the water that look like they have more support that may be an idea. I am not sure if I could handle that as I keep reordering the same style of nike walking shoes and have them in a varied amount of sizes for my swelling vs non swelling days.
On a side not I am confused is it that the class they want you to walk on the ball or you need to? I ask because me on my tip toe would equal days in bed from pain so I would have to keep flat. I would think if safe and just not doing things fully it is still a step in the right direction