[dnanian]

Well, for example, you decide on the amount of rollback you want. Let's say you want a week's worth of daily rollback.

To get that, create seven "User File" Smart Update backups, each to its own image, named "Monday", "Tuesday", "Wednesday", etc.

Schedule those for every week on the appropriate day, and there you go... they'll automatically "recycle" the backup a week later. (I'd also have a full backup, directly to a partition.)