I took a round-about way to take care of indexing my site.
I'm using Google CSE
to handle most of my searching. I actually had a business reason to leave Sitefinity's indexing: my application uses user controls that inherit from a base class that must be instanciated and hit the PreLoad handler before they can retrieve data from my internal CRM system. Through no fault of Telerik's, my content could not be indexed by the custom site search because the pages aren't fully rendered when the content was added to Sitefinity's index.
I accomplished this by:
1. Create a ashx to emit an XML Sitemap
. (My site uses Query Parameters that are generated from ID's in my internal CRM system, so if I have ...Class?ID=1234, I wanted Google/yahoo/bing to know about it.)
2. Register my site with Google Webmaster Tools
3. Create User Control
that emits markup to call to my Custom Search Engine
Also, I tried to "Add Scriptmanager to Page" and, for whatever reason, I couldn't use RadAjaxPanels- but, adding it to the master page manually seemed to work.