IMHO, the best way to hide tabs is with permissions. You might want to open an issue on the module explaining your use case and why it should provide additional permissions. I'm sure a patch would be most welcome.

Nancy

Injustice anywhere is a threat to justice everywhere. -- Dr. Martin L. King, Jr.

From: Salvatore De Paolis

I'm trying to hide some tabs installed with some modules and to do that I'm using hooks
like:

hook_menu()
hook_menu_alter()

and I'm setting the access_callback to false.
Some tabs are hidden with hook_menu() other with hook_menu_alter() (why?) and another
one doesn't want to go away anyhow :)
The tab is been installed with the flag module and it's called Bookmarks.