Unlike the standard view where you can just hack about with metaheader.ascx there is no equivalent in the mobile template - due to the strangeness of some mobile browsers you sometimes need to do this so I just created a new control called "MobileMetaHeader" and dropped it into the mobile folder. Then changed the head runat="server" to:
<
Now I can easily manipulate the metadata as before. In this occasion I added:
<meta name="viewport" content="initial-scale=1, user-scalable=yes" />
Which scales the iPod browser properly when it loads