For Drifter I holler his name, and once I see his white nose I know he's looking up. If I'm relatively close all I have to do is lean to the side (how he was taught to come into the middle during free lunging, etc) or all I have to do is yell "Drifter, comere!" Pronounced kuh-mere. He won't respond to come here properly articulated. He came that way... guess his upbringing was fairly country :)
All of my friends laugh because I have a small southern drawl, seeing as how I was born down here, but I have to totally over exaggerate it in order to get him to come to me. Its so weird. He's so weird.