What do you use to track your deer?
I use 2 items.
#1-I always carry a spray bottle of proxide for sighting blood.
#2- I carry with me some yellow news paper bags for keeping the trail marked behind me.

1. eyes
2. luck

1. mag light
2. blaze orange ribbon

Eyes and we mark the trail with pieces of tissue paper or paper towels so we get an idea the direction in case the blood draws thin.

a roll of orange marker and a couple buddies!