i make search in the folder i planed to contain the secure folder
i hide it with the utility pointed.it works ok
i make a bat file to redirectr search (dir...) to a txt file

cd E:\____ytests\_toTest\yfolder_secure
dir /b /s /a:s *.{21EC2020-3AEA-1069-A2DD-08002B30309D}  > ysearch.txt

i found in ysearch.txt the folder hidden (not found from c:\)

E:\____ytests\_toTest\yfolder_secure\Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}

the folder secure is hidden to explorer or any another classic dialog box.
of course any some professional programmer can find it (assuming he know the folder location) but cannot open it
because there is a solid password behind.
this solution seems me to be a good one.