Growing up we would get them on our south-facing porch come early Spring. It got plenty of sun and the concrete stayed noticeably warm for hours after dark. Giving the stoop a good look before stepping off was just the way it was 'round those parts.
Brad
My parents house used to have a concrete block at the garage door that caught some late evening sun. One day coming home, I walked up on two copperheads sunning. Thankfully, someone had left the shovel right by the door. They didn't last long.
Snakes were not allowed in the yard on pain of death. My mother stepped on a copperhead when I was little and doesn't like snakes at all.