I really don’t understand the single user mode requirement. We do not put qb in single user mode unless needed.  For us to do this practically every day would mean we would do it at 1 am.  If we had someone there to switch to single user mode, guess what, they could also run the reports and send them manually.  I know I am going to hear about data integrity but report read, they do not write and for that matter the data is fine when I run a report manually in multi user mode.