I've never played with the proper "log shipping" feature of SQL Enterprise so I am not sure. But the idea of "log shipping" is to have the initial full backup shipped and then you only ship the incremental changes to the database (the log backups). I imagine there might be a way to have it refresh periodically with a full backup - this would be akin to using replication and sending out a new snapshot... If I have some time later I might investigate it...