By area though, especially legally huntable? These are mostly very large mountain states that are “destination” hunting areas though, MT, and CO are the notable exceptions. I wouldn’t compare the area of Rhode Island to Idaho. The New Mexico areas are limtied military sites, SC is only a few spots, and Texas is largely private.
Peripheral vision and central seem to have different purposes in both humans and raptors. We both need to fixate centrally to identify objects. What seems to be especially better in raptors (and diurnal birds in general) is the density of photoreceptors, both foveal and peripheral. So it’s not really fair to compare their peripheral with our foveal, though in both cases they are clearly better at detecting and identifying.
Deer and elk cannot see shades of red very well. On the other hand, orange stands out very well to the human eye, particularly in contrast to a green environment. So, you lose nothing by wearing an orange vest in terms of game being able to see you, but are at the same time much more visible to other hunters. Note that this does NOT apply when hunting birds like waterfowl (ducks, geese, etc) or turkey, all of which can see colors very well.
I always wear hunter orange when required by law. I still usually wear orange if I’m hunting on public land or in an area where I’m likely to encounter other hunters, even when I’m not required to do so.
I am skeptical when it comes to scent control products, especially products like ScentLok. Correct me if I’m wrong, but most of your scent is exhaled through your nose & mouth. Unless they’re willing to breath through a charcoal filter, I’d recommend hunters not waste their money on that stuff.