Hi Kevin, a clear and concise post, so we all know where we stand.
Could you please give us some idea of the genre? What is it you're trying to produce?
My personal opinion is that nobody should work professionally for nothing. To quote an oft used saying "Any fool can work for nothing, and many a fool does." So apart from "working for free in order to gain experience and boost their filming/editing portfolio" what are you offering which makes it worth slaving for you, rather than on a TV production?