For a one-time occasion, like starting a freshly rebuilt engine or one that's been sitting a long time before putting it into daily use, the drill and extension method is certainly the way to go.
On the other hand, if your V6 is not a daily driver and only sees occasional use, you might consider a prelubricator like
http://www.masterlube.net/classic.htm. Not cheap, but if you put a high value on your V6, this is the way to go. I've got one on my Suburban.