A friend of mine calls it the Three Foot Rule. It means that when he’s at a trade show, if you come within three feet of him, he’s offering to shake your hand.It’s a good rule to observe at the 29th Annual Pumper & Cleaner Expo, Feb. 25-28 in Louisville. You don’t go to the Expo (or any other trade show) just to take classes and kick tires. A big reason to go — maybe the biggest — is to meet people who can help your business and who may become your friends.The most helpful person you meet at the
