How to move the gmail chat box to the right side

I’m a heavy Google+ user and I tend to switch between Gmail and Plus often and because of this, the Google Chat box jumps from left (Gmail) and right (Google+).

As well as making your Google experience more consistent between products, more contacts in your chat roster can be displayed and (I find) it much easier to access and use then when it is tucked away in the bottom-left of the Gmail interface.