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I use a shared layer where I've drawn lines to serve as guides. I lock the layer and have set it not print so I don't have to worry about it getting in the way. The only issue is that there isn't a quick key command to toggle the guide layer's visibility, so you have to toggle the Canvas and then click on the layer's visibility control.

A nice benefit is that I actually have several sets of guides/backgrounds - columns of equal size as well as a general grid showing common groupings of those columns (thirds, quarters etc.)