I to, have got Plantier fasciitis. Well, i had in both feet, now only in the right foot. How i am fixing it? One, The muscle that runs up the front of the shin, i do weights on it and stretching for it. For, it runs down and around the underside of the foot. The calf is a very strong muscle, and my shin muscle along the front, was very very weak and tight. Two, ice the heels after training or before bed, whatever is easy. Three, orthotic in all shoes. The other day, at work, i forgot my orthotics, and i was in pain all dam day. Four, massage with a anti-inflamotory gell before bed. Five, once wk of physio ultra sound. Six, this is a new one, been doing for a wk now and it is working great. During the day, and during training, walk on your toes, up high, and inside and outside of foot too. This strengthnes the arch and warms it up before hard training. Seven, before and during training, apply a heat gel, like deep heat or something, around 1/2hr before training to warm up the tendons in the foot or affected areas. Massage it in, and even after repeats on the track, keep massaging the tender parts with the gel. Makes a world of difference. Eight, do less running till the pain has subsided. Still follow your program, just do less efforts. And, make sure they are quality. Oh, and a no no, which i found out, was, dont do any cycling before training. Which i thought, would be good, no impact on heel, pain free, still able to do the energy system training but on a bike. this is not good, unless you do it on a day without running. Cycling, causes the muscles to fill full of blood, being a concentric exercies, causes the muscles to contract and tighten. When you get of the bike, the legs are tight. Then you attempt to run, and the tightness of the legs pulls on the sore tendons making them hurt like hell. Remember, running is an ecentric exercise, cycling is concentric, a world apart.
I agree with you fully boldwarrior, infact I do most of what you’ve said in the above post. One of the exercises I do on a leg press is reverse calve raises. That means putting the heel of the foot on the leg press and pulling your toes/foot towards you.
Another thing you can do to stretch the plantar fascia is, while sitting in a chair, bend your right leg and place the ankle on top of the left thigh/knee. Now, interlace the fingers of your left hand between the toe spacings of your right foot (work your way as deep as possible). Using the left hand, circle the right ankle about 20 times each direction slowly. Repeat with the other leg.
I think that the modern shoe alone reduces your ‘feel’ of the ground below and adding orthotics makes your feet practically numb to any changes in the terrain. The feet have an important role of reading the terrain in order to be able to adapt to it by muscle activation. Without this flow of information from your feet you can’t perform optimally. So the less shoe the better imo. Of course if you already have platar fasciitis from improper foot strike, you can’t stop using orthotics at once. First you need to correct the underlying cause. By just using orthotics you are just transferring the problem to another spot higher in the kinetic chain.
I am going to try to stay in orthotics as much as possible even in speed training. I will take them off for the races.
You should practice without them for some practices on and off about 8 weeks before your major meets, maybe one practice every other week to allow your feet to recover and also on the days you do decide to run without orthotics ice your feet a couple of times after practice to reduce possible inflammation. 
I had severe PF problems and found the DARD VERY helpful.
Check it out:
ankle/feet wts do the same thing when you dorsi flexing with the feet hanging off a chair or you can use the Smith Machine (and load the bar) or you can go do this with a triceps bar on your shoes at the seated rows station because there you can put your feet against the platform and then pull up with the shin muscles. I prefer using the Smith Machine b/c you can add wt to it and start training your shin muscles in a similar fashion as you would train your calf muscles this will strengthen the arch and help stabilize your foot.
Hey in fact this exercise should be used for the antagonist calve muscle (calve raises) and this will also produce muscle syymetry. I am going to include it immediately to help with my fallen archs (and no I am not talking about Mcdonalds! LOL). 