Unix is not exactly my forte but is there a way? I would rather backups did not run every hour. For me it is overkill.

Full backups don't run every hour. That's just the standard interval, and only changed items are backed up. I doubt you would ever notice that it even runs, as it normally only takes a few seconds.
Here's an article with one method to change that interval, if you like: http://www.tuaw.com/2008/12/08/terminal-tip-change-time-machine-backup-interval/
There's also a few utilities that can adjust the Time Machine settings: http://www.versiontracker.com/dyn/moreinfo/macosx/33757