I have a fleet of laptops registered to a ZCM 11 server. I regularly re-image small batches of these machines. What is the fastest/best way to go from a freshly re-imaged machine to one that is registered with Zen and has the DLU policy I have created applied?

I have tried:
> Image containing Zenworks Adaptive Agent, not registered. Run a script after imaging that does zac reg and then zac pr. Did not work reliably on more than 60% of machines in the batch.

> Image containing Zenwork pre-agent. After imaging, used Discover Advertised devices + Deployment task. Works better than the other way, most machines will install and register fine first time. Most machines will have policies when the process completes. Still some machines with problems that require attention manually. Discovery process is quite slow.

Any suggestions are appreciated.