bajapalm
it seems so simple..
I look at the length of the par 3's and choose my tee box from that. If there is more than one over 180 yards I will move up until they fit that range. I usually play the whites or equivalent at a course I have never played before. If I play that course fairly well I will move back a tee next time I play it. I have no business playing the tips unless its a short track.
I like this idea and will use it in the future. I usually just look for the tees in the 6300 range