The best ground for an electric fence is a cattle panel buried deep enough to get on top of clay. In my area that's about a foot deep. Just dig out a hole with a loader and bucket lay the panel in and cover it up.

If my people, who are called by my name, will humble themselves and pray and seek my face and turn from their wicked ways, then will I hear from heaven and will forgive their sin and will heal their land. 2 Chronicles 7:14