Pronation is not bad! It is a healthy and natural movement of the foot. What we do not want is excessive pronation. This is what can cause the development of plantar fasciitis.
To see the toe spreading devices I mentioned, follow this link:
http://www.pfsurvivalguide.com/toe-separators.html
To see what shoes I recommend, follow this link:
http://www.pfsurvivalguide.com/plantar-fasciitis-shoes.html
To watch my latest video on how to stregnthen the feet, follow this link:
https://www.youtube.com/watch?v=bopJ4o74ENU
For more information about plantar fasciitis, check out my website at http://www.pfsurvivalguide.com