If I ride real thin soled shoes my feet go numb. Thicker tennis shoes are not a problem, but van's and what not are pain.

I run a set of MKS Sylvans... but when I was using Shimano M324's (platform side) it had enough support not to go numb.

I'm thinking that a couple of hose clamps with the barrel side up around the pedal body may help carry the load... but I haven't ugglified them yet.