Geo, a local man I know was bitten above boot top by a rattler season before last when he was coming out of the woods at dark after deer hunting. He was hospitalized for a week. A turkey hunting buddy was bitten on the finger by a small cottonmouth. My buddy was cleaning out an ornamental fish pond in his yard this summer when the 12" moccasin nailed him. His finger swelled and the wound area blackened and sloughed off, but no anti-venom was necessary for treatment.
Lessons learned: wear snake boots when hunting the low country when temps are balmy and avoid yard work at all costs.