It seems like what works really depends on the individual. What seems to work for me is more minimal, firm and flexible shoes. Something along the lines of a 5K/10K/XC racer. However, I've worn lightweight shoes for a long time, and only recently had gone to slightly beefier shoes and developed the PF problem. I keep reading about how people should be in cushier shoes, arch support, do strengthening/stretching exercises, treatments, etc.. What seems to work for me is leaving my foot alone in terms of treatments and being in a firm, flexible shoe. I haven't figured out yet if I'd feel comfortable in something soft/cushy AND flexible. I'm curious if others have figured this out, if it's all about flexibility, and/or the hardness/softness?