Hello Bryan Kowalchuk,
There is not an easy way to achieve what you need by using the AutoToolTipify feature because the tooltips of the rating are updated dynamically on the client. However, since you tried to use AutoToolTipify, I assume that you do not display LOD or complex content and thus I suggest to use a separate RadToolTip control. You can find a sample demo with two possible approaches in the following forum post:
Please, examine the reply and demo posted on Feb 11, 2010 by my colleague Tsvetie and use it as a start point for your implementation. In case this will not work in your specific scenario or you need further assistance, please provide a sample, fully runnable demo of what you have done based on the demo in the forum post and we will examine it and see what could be done.
the Telerik team