Instead, if your folder looked like an innocent shortcut no one would know you have data in there.
No one can get inside this folder now without knowing the CLSID you used to hide it.
Using Batch Files
If you want to go even one step further you could create batch files.
The following one hides my folder.
Then to unhide it i use the following batch file.
All that you would need to do now is run one of the batch files.