How do y'all judge yardage(without a rangefinder).
When I shot years ago, I'd walk the woods, pick a spot, guess the yardage and then range it. That was as much important practice to me as shooting. Then you may see a pattern of how lots of light makes you think it's farther and lowlight looks closer (at least for me). Also stare the ground to your target butt at known distances.
The best way is having all the targets you'll be shooting at and looking at them everyday. But that's out of most of our's realm.