All data is useful. I have posted enough information on this thread that you can piece together the method. You can see the transects they fly Pre and post season year after year. That is a pretty good way statistically to get a population count on wildlife. I’m not sure what you want them to do that would be better?
Phone surveys could be improved by mandatory reporting, no doubt. But it probably wouldn’t change the total numbers, just the confidence interval. It would probably change unit harvest numbers that are affected by small sample size. Accuracy would improve, and it shouldnt be that expensive to do.
What I struggle with is the use of AHM. AHM revolves around changing season structure based on population and conditions so that harvest is surplus, I.e compensatory not additive. It works well with ducks, but big game? We know deer/elk populations fluctuate based on a variety of factors. We know that landowners have a social tolerance for animals. Setting seasons to hit that sweet spot where harvest is just enough- compensatory when population is low, additive when it is high- seems almost impossible. But, and I said this earlier, they do it with antelope using a different season-setting structure and there is less complaining.