I have an older injury in my right foot that seems to flare up at weird and unexpected times. At times, playing the bass drum can be quite painful when it is flared up and other times no problems. Because of this I taught myself to play the bass drum with my left foot, in the style of W. S. Holland (right hand drummer playing like a left handed drummer). I know you mentioned that you had this condition in both feet, but you stated more so in your right foot. Perhaps you could try this and see how it goes? I will say that when I first started playing this way, everything felt wrong. Muscle memory was fighting against me as I have always played with my right foot for bass drum (I'm a single bass drum only player - perhaps if I played double bass or double bass pedal it wouldn't have felt so foreign). However, in just a short time it started to feel more and more natural. Just an idea.
Thanks. Oddly enough, I have no trouble playing bass with my left foot. I don't have the endurance of the right but I don't have any trouble with the limb independence or hitting my marks. Playing the kit in a left handed setup I haven't really tried.
Either way, I don't want my left getting any worse. I'm already starting to feel it more in the left I think because I'm walking a little odd due to the boot on the right side.
I did have an idea the other day. I built an E kit one time and learned a lot about making a piezo element pick-up properly. I was thinking I might goof around during this off-time and see if I can setup a trigger and just play it with my toes while my foot is flat on the floor. I seem to be able to move them fairly quickly. Even if it simplifies my bass parts, it's still more than I would be able to play otherwise.