security during amrecover

[Tom Strickland]

Our system will be run largely without a competent Unix administrator
on-site. The secretary and one other individual will be responsible
for tape-changing, cleaning and amrecover for files and directories
deleted by users.
My question:
Some of our files are more confidential and I would like to hide these
a little: the director's files and the accounts. Is there anyway to
protect these? It doesn't have to be high grade security, just
security through obscurity.

Thanks,

Tom