Managing Insight Analysis width

I'm trying to get my Insight Analysis to display full-width, instead of smashing everything up into the top left when viewed. I can see how to modify column widths, but I see no way to modify the report area on the page.

Here's an example of an Analysis I created yesterday - there are a bunch more columns and I have to scroll in that tiny little space at top left. There's gotta be a better way!