"What recourse does one have if your county imposes unreasonable rules?"
"Reasonable" is determined by judge and/or jury.
Even with what seems like plain language in preemptive state laws or the constitution, it seems like those don't place many restrictions on what a local government can do, as the protections are quite limited and in some cases have been watered down.
If you want a good example of how this works, look at the firearms preemption situation in PA. There are constant cases and appeals about what laws municipalities can make. The people in power will make whatever rules they want with no repercussions, even when they know they are barred from doing so.
Back to your original question, I think the only real solution is to move to areas where the population has a similar mindset. Those options may be limited though. This is especially true with increasing federal regulation, or when population distributions in a state effectively give cities power over the entire state (see NYC+suburbs and NY in general).