This system is designed for bedside (or couch-side) situations where you have a nearby side wall. It also requires that you know exactly how high you want your iPad to float in front of you. I installed mine at slightly above eye level when sitting up in bed (as it can pivot downwards). It's still low enough that I can block the lower edge of the iPad with my bent knees for doing on-screen gestures.
Sold my iPad. This is now for sale! eBay- iPad Cradle Holder Hardware