Missing hot corners and Dock keeps defaulting
So I've finally found an answer that resolved my Hotcorners and resetting dock.

https://discussions.apple.com/message/22421052#22421052

The first two helpful comments were what solved my trivia.

Basically,


Head over to ~/Library/Preferences and delete com.apple.dock.plist 
Restart/Reboot Mac
Go back to ~/Library/Preferences and ⌘+i to get info on the .plist, and make sure the permissions are set to Read &amp; Write for Administrators.
Test and customize your dock to your liking!