I'm blue/green and red/orange color blind. (I can see the colors but they look a lot a like, don't stick out to me - sucks but I also can see deer MUCH faster than normal vision people. Movement is like a klieglight to me, not so much to others.)
Blood on leaves isn't the easiest thing in the world for me to see. I drill shoulders so they don't run.
Runt shot a buck this year and stewed the lungs. Was 70 yards before we found blood and about 90 before the deer was found.
My father is a great tracker as is my brother so I either have to know they're in camp or take out the steers. I rather take out the steers and just show up bloody....