I've been kind of getting into pool more and I read where your shooting hand grip should be about one inch behind the balance point of the cue. If that's true, I think I habitually hold it even farther behind than that. Got me to thinking, for consistency, do some cues have a ring or some other marker to indicate balance point? Dumb question? Or does it matter... do you vary this grip spot quite a bit? This also brings up cue length. I tend to like longer cues I find on the barroom wall. I am 6' 2" tall, does that matter? What length is 'acceptable?' Thanks.