Teach "touch"..Just like using the word "yes" or click, get the dog used to touch.....So if the dog is in the correct position it gets to touch. Touch to the dog means a reward is coming. With a little dog, you can use a wand or the special ones you can buy for dog training.
To my Katy the hand is just as rewarding as a treat now, she gets a real positive out of touch, initially a reward always came after touch, now touch itself is rewarding to her. very handy in the Obedience trial ring, because it is still allowed..maybe not for long.