Maintaining Site Specific Ports

[Ian A. Tegebo]

I'm interested in maintaining a set of ports that install site specific
files.  I was hoping to set something up like Gentoo's Portage Overlay:

http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=3&chap=5#doc_chap2

A coworker simply tried putting a custom port in
/usr/ports/OURSITE/ourport but couldn't get indexing to work; does
anyone have any experience doing something like this?

--
Ian Tegebo