Perhaps a simple feature to permit high speed searches in RadSearch is to allow custom SQL Select strings in lieu of direct connect to a SQL Datasource (unless there is a way to accomplish the following in a SQL Datasource)

I have FreeText and text optimization configured/added in SQL Server.  This provides a tremendous speed boost for searching strings.  Therefore, somehow in the RadSearch box allow searches such as:

SELECT * FROM myTable WHERE contains(myTextIndexedColumn,'this is fast') 

SELECT * FROM myTable WHERE FreeText(myTextIndexedColumn,'this is so much faster!')