Only certain kites will dead-launch easily and consistently. Many of Prism's kites were designed to do this, and as a result it seems to create less wear on them. In general, the dead launch is a very harsh thing to do to your kite, especially if the ground surface is at all abrasive. Even if it seems to be soft grass, you still don't know what kind of nasties are lurking unseen among the blades.
As your kite skills improve, you will find that you very rarely end up in a dead launch position. And in those instances where you do, you'll usually know exactly why, and the walk out to the kite will give you time to reflect on how not to do it again
-Ron G.