GoZync doesn't require anything special in your mobile file. But, you will need to edit the script "ReOpen" to make sure it calls your file's startup script after the comment "Run your start up script".
Another nice behavior is to go to your "main" layout and set it's layout name into the variable "$$gz_HomeLayoutNumber". We pick that up when closing the connection to make sure users arrive back in the main screen of the mobile while when we clean up the connection to the hosted files. You'll see an example of this in the mobile file that ships with GoZync.