Hi stevesolo,
Tightness in the bottom of your foot is definitely a common symptom with plantar fasciitis. You did mention that you have the BFST and ColdCure Back/Hip wraps, so you could actually use these products to aid with your plantar fasciitis pain! If you just place those larger wraps down on the floor, and put your foot on them, they should work very similarly; as long as you can feel that warmth from that BFST and the cold from the ColdCure, then the treatment is working just the same. We do actually have specific Foot versions of those Back/Hip wrap you already had, but I figured I would suggest possibly using the ones you already have.
Don't ever hesitate to give us a call if you have any other questions at: 844-400-2525
Thanks,
Dillon with King Brand