You might also consider getting one of them Adam's Family Uncle Fester Spanish Inquisition stretching torture racks from Ebay. If you don't have anyone to turn the wheel on the rack to stretch you get the self-turning model
Seriously, for some reason I feel the best way for you to Intend growing in height is to meditate and 'see' yourself growing taller while hanging from a chin-up bar with your feet off the ground. Hang from the bar while Intending greater height for as long as you can stand it. Relax as much as you can while doing each set of this exercise.
That's the best I can think of right now except for maybe doing this exercise while using gravity boots to hang upside down from a chin-up bar.