Not only do I not agree that we need a moderator, you couldn't
moderate this group if you wanted to! Usenet has rules and you can't
convert a non-moderated group to a moderated one.
You'd have to have a new group created, probably
rec.woodworking.moderated, and there are more hoops and votes and
nonsense to jump through to get that to happen than is at all likely
to happen. You need to find several moderators, and then hope that
anyone from rec.woodworking will actually post to
rec.woodworking.moderated, which is unlikely.
It's easier for you to just learn how to use a killfile on your own.