well, i'm the new boy round here, but i hope this will help
plantar fasciitis is normally linked to excessive pronation of the foot and or tight calf muscles, for any clients i see with the problem [about 2-5 a week] we use the followign treatment plan
1] support the foot with either an off the peg or custom made orthotic, it must be a deep heel cup which helps to cushion the heel and support the foot. the support is required at all times [including getting up to go to the toilet at 3am] in the morning wear the support in a pair of shoes for 15-20 minutes walking around to warm all the muscles and get everything sttretched a little THEN go and have the shower that you may have had straight after jumping out of bed
2] stretching stretching stretching...i sound like TB but you need to do lots of gastrocnemius stretches, i normally suggest 3 x each leg 3 x daily
3] ice to help take the imflamation and pain away a frozen can of OJ is good or a bottle of water that has be frozen rolled unde rthe foot offers a massage, stretching and ice in one, for those who cannot sit around for 15 mins and do this every evening then Biofreeze gel is really good too
the key is getting the right orthotic for your foot and finding out where the problem originated in the first place..... most of the time the tight calf comes from a problem nearer the pelvis
using this technique i have only had one person in over 2 years that we have not been able to resolve the problem, [the problem here was one of an over weight patient who did not want to put any effort into the stretching program]
hope this helps:d