I'm in the process of installing one at one of my yards where a bear has been spotted recently. The directions call for the ground rod to be driven into the ground at least 6 feet! :shock: I bought a purpose rod that is 6 and a 1/2 feet long, but how on earth would some one ever remove it if you wanted to move the system? A farmer nearby tells me he only uses a 3 foot chunk of copper pipe, and says 6 feet is not necessary. Anyone with experience in this?