I grew up hunting Public Land in Northern MI. There was a lot of hunting pressure 15-20 years ago. My Grampa told me to "shoot when you have a shot, because you never know if you're going to get another". As long as you had a doe tag we followed this simple rule.
"If It's Brown It's Down"
Now I have my own land I like to practice QDM, but I go north to hunt still and the first legal buck I get a shot at I take it!