Ryan, I have the same problem. My ex wife used to do all the blood trailing- it was really frustrating for her to point out blood right under my feet. I had to learn to track by reading the other sign- fresh turned leaves, fast-moving tracks, etc., and by learning how deer move through the terrain when hit. It took me 8 hours to find one poorly-hit buck. I'm sure I've lost a couple for lack of color vision and lack of a tracking dog. I don't shoot enough deer these days to keep a dog, and unfortunately don't have a friend with one.
On the other hand, the lack of color vision forced me to become better at woodsmanship. I practice by following fresh deer sign every chance I get.