Although all of us would like to see our deer fall within sight of our stand, tracing a blood trail is often a reality of hunting. When following a sparse blood trail, I drag a 50-75 ft length of brightly colored string behind me along the blood trail. This allows me to look back along the direction of travel as I search forward for the next speck of blood. then as I find the next drip I advance the string forward to keep me looking in the right direction. This technique is especially useful in grassy or agricultural fields where the wounded animal will likely cross running. It also is less offensive than using toilet paper to mark blood trails. When my tracking is finished the string goes home with me so other hunters aren't alerted to the paper trails of a successful hunt at my sweet spots on public lands .