How do you estimate range?? I do mark out range indicators, an odd decoy, stick or small pile of brush at 40 yards from my shooting spot. This works well when a goose comes in 20' of the ground. But what do you do when they are straight up. To complicate things more all geese are not the same size and a 7 lb goose at 45 yards may look like a 4 lb goose at say 35 yards. Also won't a snow goose will appear to be larger or closer than a blue at the same range because of the light color VS dark color thing. I have been in the field when the guide had a range finder, after passing on a shot you will get different range estimates from every hunter, some high some low, a person that guesses high one time might guess low the next. Some will say, "don't shoot unless you can see the feet but it seems I can see the feet over 50 yards away if I look for them. P.S. Is it just me or does a goose appear closer the longer you watch it show off its flying skills just out of range.