You wouldn’t think a lazy afternoon on the beach would set a guy to thinking about days on the farm, but it sure did for me. One important piece of my family’s annual reunion in Chamberlain is the Missouri River. Family members, usually the younger ones, more energetic and less likely to be bothered by heat and humidity, show up on the beach in late morning, just about the time our older son arrives with his old but serviceable boat towing a fou…