Well, Mikey loves to be handled anyway, and I do rub him on top and his belly as well (I'm a massage therapist, so I give my snakes the same gentle loving!). But, I just open up the top and start calling him when he's awake, and he will eventually make his way up to the place where I hold my hand. It sometimes happens in a minute, sometimes 5 minutes. He's learning to come faster and faster each time because he knows that he gets a good rub. Yesterday he wrapped my right arm and refused to let go for 1 hour and 20 minutes. I made BBQ sauce while he was holding on!
I forgot to add to the snake tricks, they both allow me to pet their heads. They don't even move!