In the thick stuff, I don't clear shooting lanes beyond 20 yards or so. It helps resist temptation to shoot too far. When things are more open, I try to rely on my best estimation of 20 yards and even if the feeling is good, try to resist anything longer than that. I have not killed a large number of deer with the bow, and most shots were probably 12 - 15 yards.
I sometimes practice at longer ranges for fun but just don't seem to pick the spot as well as I move further out. A 30 yard shot may as well be 30 miles - I just can't pull it off.