BOXALL DNA Project

Quite some time ago I set up a DNA project specifically for the BOXALL and its variant spellings with Family Tree DNA http://www.familytreedna.com/group-join.aspx?Group=Boxall unfortunately no one has purchased a kit to take part in this group.

Could I get feed back on why other surnames appear to be able to recruit people to take part but I have drawn a blank with no one willing to spend the money to take part. I know it is quite expensive but I really was hoping that it would be great to see if the various spellings are actually and truly linked and if my theory that there is more than one major ancestor is correct.

Discussion would very much be appreciated.
thanks
Ronnie