From an article on Earl Shaffer, a famous thru-hiker on the Appalachian Trail:
"In a way, Mr. Shaffer saved his most impressive achievement for last. Four years ago, on the 50th anniversary of his first hike, he once again hiked the trail -- which had grown around 100 miles, to 2,158 miles -- making better time than some people a third his age. He was two months shy of 80 at trail's end.
''I just like to walk in the woods and sleep on mountaintops,'' he said.
Mr. Shaffer, who selected the nickname Crazy One, was a throwback to an age of hiking before high-tech fabrics, featherweight packs and cellular phones. He wore long trousers, a flannel shirt and a pith helmet with mosquito net. He carried a rucksack from World War II.
He wore no socks because he got fewer blisters without them. He carried no sleeping mat, tent or stove, because of their weight."
All his equipment weighed about 8 pounds. So do not worry about taking too little!