If you go to all the trouble of making all the blocks not visible on the course page then the centre content area doesn't expand to fill the space. The right-hand block column is still there (with editing off)
Compare this to the Bootstrap theme which actually has a 'Full screen' option.
this is probably a layout issue which is inherited from theme_bootstrap - but we don't have their solution inherited. I need to look at their renderer or how they output it to include it.
If you go to all the trouble of making all the blocks not visible on the course page then the centre content area doesn't expand to fill the space. The right-hand block column is still there (with editing off)
Compare this to the Bootstrap theme which actually has a 'Full screen' option.