I've had PF 5 or 6 times over the last 20 years. Can be more painful and take longer to rehab than the two knee injuries/surgeries I've had. Have usually been able to bike with it . I'm a runner and played a lot of basketball. Strangely perhaps, I've found it crops up in periods of inactivity -- for some reason or another I'm not running or exercising as much and I'll start to feel it. I stretch my calves more when I am running regularly which is probably part of it. I also suspect that running helps keep the the muscles/tendons in my feet stretched and promotes blood flow thru them; but that's a layperson guess. I have spurs in both feet now, but they generally don't bother me. Just got over my last bout in December, took about six months and a couple of shots. Some things:
If you wake up with heel soreness/tightness, a night splint is essential. I've gone thru many, this is my favorite at the moment:
http://www.darcointernational.com/nightsplints/pneumatic-night-splint it has pneumatic adjustment to increase the angle of stretch. Only caveat is to be careful walking with it, the air bladder under the ball of the foot can pop. It's more comfortable than some of the ones w/hard plastic, and the thin straps on some of those can impede circulation. The Strassborg sock I tried favors stretching the ball of the foot more than the heel -- as my pain is always heel based, it doesn't work well for me. But yes, my wife has found all iterations of boot and sock very sexy
Regular calf stretching helps. Best stretch is not to put the ball of your foot against the wall, rather your foot should be out from the wall, heel flat, then you lean against the wall. Going up your leg and back should be roughly a straight line. 4- 5 times a day, 5 reps of 30 secs, though there is some evidence that more reps in shorter durations works better, more stretching and releasing of the tendon. Some PF suffers angle a board on a brick and stand on that for periods of time. The slightest hint of a twinge now, and I up my stretching regimen.
I've had leather custom orthotics for fifteen years, they help and have been remarkably resilient. More comfortable than hard plastic ones too. The best OTC orthotic I've used for higher arches is this:
https://plus37.safe-order.net/cgi-heelspurs/a/b.cgi?p=pin I either have this or my leather ones in every shoe I wear, other than sandals. For that, I have a pair of Tevas that have a very prominent and solid arch support. BTW, heelspurs.com is a great source for info. Don't ya just love the internet?
Possibly worth checking is your stride. I have med/high arches and actually mildly underpronate, so first suggestion way back when of a more stable, motion control oriented shoe was off for me. A more neutral shoe (and/or insert) that allows my foot to roll naturally is better. There is a school of thought, barefoot running, et. al., that shoes have gotten too supportive and this promotes the weakening of foot and surrounding muscles in a way that can lead to injury. Shoes like Vibram's 'Five Fingers' and to a lesser extent, Nike Frees, work on this notion. I wear Frees quite a bit now (with my orthotics) -- they are extremely flexible and you can feel them working your calves among other things.
Rolling on a golf ball or ice cylinder can help, ice after activity or even the stretching can too. Best is immersion in ice water, more convenient is a bag of frozen corn or peas.
I've had four shots total as a last resort. Three worked, brought me back to zero. They are painful, but over in a minute. For reference, I've often skipped novocaine at the dentist. I had two shots last year for my latest bout, the first, from an orthopedist, didn't take. The second shot, which pretty much ended this last bout was directed with a sonic imaging device. My podiatrist (I have an excellent one in NYC and he's got a much better handle on PF than orthopedists I've seen) said it allowed him to use a weaker dose than what the orthopedist used. Had this shot not worked I likely would have tried shockwave.
Aside from the pain and associated disability, the most frustrating thing is the mysterious nature of it. A treatment that works for one bout doesn't help the next. I think all the things I've done to get rid of it have helped, but it also seems to just leave when it's done with you. And though I have some suspicions, it's appearance rarely coincides with any obvious cause.