I've been doing it with baby steps (VERRRRY gradually lengthening the time I have them stay, and the distance -- like a fraction of an inch longer at a time) and tons of treats. I was so excited last night when one of my babies kept the "stay" even while I opened and backed out of the door and shut it... trust me, I never thought my hyper puppies would get it! Oh, and doing the "talk to the hand" motion while they're staying has always seemed to help. I should probably be working with them one at a time, but so far I've been working with both at once, and it's going well.