Hi Darran,
Thanks for using Syncfusion products.
We have created a Prism Docking Manager sample to illustrate the Serialization (State persistence) which you can download under the following location.
Sample Link:
http://www.syncfusion.com/downloads/Support/DirectTrac/87867/CS1137116555.zip Please let me know if the sample helps.
Regards
Surya Narayana