Without using iFuntastic, is there a way to create a spacer or gap between the icons?

e.g. Creating a "false" app with a "blank" icon.png. Afterwards, using rSBT to arrange your Spring/SummerBoard. Ideally the user could copy and rename this "app" like Spacer1.app, Spacer2.app, etc. resulting multiple gaps between icons.

Just an idea...