I purchased a "StrongTek Portable Slant Board" on Amazon. There are a number of similar products available & many have free returns if you are a Prime member. You might want to check it out. "Insidious" is how I describe this condition too but hard to explain to people who don't have it. I'm currently back to a cycle of foot cramps wrecking my sleep every night. No sleep = worse cramps & burning pain. It's exhausing. Good luck.