My BIL held fast to the full moon stuff since we met 25 years ago.Moon doesn’t mean much once the guns start popping at daybreak opening day. Don’t overthink it, you only have 5 days in 1st rifle, get out and hunt all day.
I did something similar. I had a excel sheet on my phone and would tally up every animal we saw for 3 years and every animal we shot for 10+ years that we knew the exact date and time. Then added in moon phase, whether the moon was up or down, time of day, weather, perceived hunting pressure, etc. After all the data points we concluded that the moon phase and rise/set times didn't matter on seeing animals. The only real pattern that seemed to immerge was that animals seemed to sneak around between 10:30am and 2 pm during moon phases half or more and rise/set times that were at night....but there were some outliers there too. Moral of the story, unless you're hunting elk during the rut with a bow and have to pick a time to hunt, ignore the moon and just hunt hard all day or be at glass all day.My BIL held fast to the full moon stuff since we met 25 years ago.
At one point just a few years ago when having the debate for the thousandth time, I tallied up all of our group's harvested elk and matched those dates against the moon phase at the time. Not a giant sample - but they fell in every single phase of the moon. If he had better dated his old photos, or if any of us had better memories, I bet I'd find the same in older data.
The only adjustment I make during full- or nearly-full moon phases is leaving camp earlier in the morning given the abundance of available light.