Open your file manager. Press the UP button, so that you're in the /home directory instead of the /home/<user> directory.
Right click on it and select 'Copy'.
Open a new tab with your file manager. Navigate to your external drive or backup drive.
Right click in a blank area and select "Paste'.
Tada! You've backed up your home directory.
Repeat this regularly. Only, wait and watch the copy process start. You'll be prompted to overwrite existing files/merge. Any file that refuses to copy can be safely skipped.
There... You have a working backup system for your important files. If your install breaks, or if you install on another device, just do a clean install and copy back /home/<user> to the right directory. Then, install any missing software - and that software should use the configuration files that you backed up.
I can restore even Google Chrome this way and when I open Chrome up I see all my tabs open, all my passwords saved, all my favorites, all my settings, etc... I'm usually even still logged into the browser.
It's the easiest way to preserve /home that I can think of. It doesn't even take long ESPECIALLY if you store important data on a disk other than your OS disk.
The transfer is still in progress and on it's way to completion.
For just the config file for the docks I can do the same correct?
Do you use Google Drive or the Cloud for backups KGIII?