I had warm water therapy, with some type of stimulation, which shot little pulses into the appropriate areas of my foot when I had PF. This was probably almost 25 years ago and it worked like a charm. I went to a podiatrist for treatment.
I *did* get the custom orthotics for my aerobics shoes, but my insurance paid fully for them and they also were to keep the stress fractures at bay, since i was teaching classes on horrible floors.