Hi Midori M, thank you for your question. I'm assuming you mean lying supine on the Reformer using the jump board. The answer is yes, it's a great place to practice and feel the dynamics of the foot!
Barb C, I've collected them over the years from several places. A couple of sites to check are: sawbones.com and egeneralmedical.com. They have many anatomy props to review. All the best, Tom