Is there anything left to try i've had 4 pairs of orthotics all been destroyed by flat feet over pronation and plantar faciitis what else can i do?

See below : Try orthotic ucb , see a good foot orthotist. Good luck thank you.

Please checkout: The website fixmyflatfeet.Com this is indeed a surgical procedure but minimally invasive. I have had excellent results with it and your foot type looks conducive for this procedure. Alternative procedures would be flatfoot reconstructions. Orthotics will never fix your feet.

Orthotics: Sounds like the material was inadequate for your weight or use. There is surgery for plantar fasciitis , but you still need orthotics so try those -again.