Do you mean above the menus in the header? Not sure how that would work or look, given the responsive nature of the theme.
There are a few hooks in the theme (not quite all documented yet!), if you are a coder that allows you to put stuff above the main content area for example. I can try and suggest how to do it if your wanted.
With regards plugins, must of the ad-specific plugins wouldn’t be too hot on responsive side of theme.