Here's a photo of a guy that's got a good frontal hair line but his crown area has thinned out. He will make a template to cover the crown area only. He'll need to shave off the thin hair in the crown area to get a good solid attachment but not the thin hair in front of the crown that is combed back over the crown area.
Regards,
John
http://toplace.com/

I wonder if he is going to wear his hair back or not. I would recommend that he get some dermmatch or prothick concealer. I think that helps with these kind of attachments, if something is not totally perfect or there is a little gap, one quick shot of concealer can totally fix the situation completely. I know when I wore a partial at the front it came in very handy.