RE: Finding\Starting a new field
I went back and re-read your original post as well as your later posts... Now I understand the responses you wanted. You want to know how to physically find a site and how to find out who owns it... is that right?? If so, the information can be had at the county court house and often times the appraisal district entity will have an online search tool as well. There you can even get satellite/aerial imagery as well as pertinent tax role information such as owners name and mailing address. I have used that tool to find land for many uses... including model flying...
I hope that helps... and saves you some gas...he...he...he...
Good Luck and sorry to have taken your thread down a road that you hadn't intended about land use laws... please forgive me.