Photoshop :: Keeping Photos Within App Windows Without Tabs

I'm using Photoshop CS6 on Windows 7 with a dual monitor setup. In a prior version, it was the case that multiple open photos could stay in the application frame, such that moving the frame would move all open photos with it, but without using tabs/partitions, which I dislike. Is there no longer a way to configure it this way? I've experimented with "Enable Floating Document Window Docking" and "Open Documents as Tabs", but they aren't doing the trick.
 
I'm often juggling several applications, and regularly find it convenient to move things from one monitor to the other based on what specific task I'm doing. I know tabs are one "solution", but are inefficient and impractical in my experience. The images I work with typically start very large and get resized/cropped during editing for use in email and the web. Consequently, I have open a mix of very large and small pictures, some portrait and some landscape. Using tabs or multi-up partitions, I can either view only the image I'm working on or some fixed number of images in a fixed (though adjustable) layout. In the latter case, I can usually only see a small portion of the large photos unless I manually resize them based on the current partition size, which changes based on what else I'm currently working on. If I choose to have one "Fit on screen", it's resized based on the full screen size, not the partition the image is in, so again I'm only able to see a portion of a large image. Smaller pictures end up with wasted space within their partitions.