Once my files get so big with pictures I'll download them to a CD and label it with the year and what it is.
As for exceptional deer and elk that I might want to look at more than a couple of times or other pictures that will get looked at quite often I'll copy them to a second file just so that I can find them quicker.
I usually end up with files with names like buck deer 2017, bull elk 2017, and so fourth. These are the ones that I look at more than a couple of times. Then if they are really nice I'll get notebook size print copies of them that I will file into a photo album.