My error. I meant to write I am fine with aluminum foil, and doubt there's any tin in it,
So, is actual tin foil sold in grocery or hardware stores anywhere?
The tin foil hat thing makes getting around a bit slow, as my wife has run ahead of me, drive a ground rod in, move the jumper cables, connect the hat, remove the jumper cable from the previous ground rod, pull the rod out, run ahead, drive a new ground rod, etc., etc., etc.