I don't track blood trails. That would be like looking for the frosting on the cake, rather than the cake crumbs. Few and Far betwen.
Learn to read and follow Deer tracks.
Most bleeding in deer shot with RB is Internal. Then if blood does come out one or both holes, the fur on a deer absorbs a lot of blood. Its not unusual to find some blood spurted out on to surrounding brush and plants where the animal is standing when its hit, and some splashes of blood on the plants and forest floor for a few years as the adrenalin kicks in and accelerated the pulse rate. But, if the animal does not bleed so much that its blood pressure drops to the point it passes out, within 50 yards of where its hit, that blood is likely to stop appearing on the ground and brush altogether, and only if a deer brushes the wound against brush or trees, will you see any blood evidence.
Blood evidence is a Luxury, not the main course for trackers and hunters. The groups that teach " Blood trailing" don't even teach the most important information you can have about following blood spots from a wounded deer. When a deer stops running, and goes to walking when its wounded, blood drops, when they appear will be approx. 4 feet apart. I don't know exactly why, and it obviously is different with the smaller subspecies of deer like the Key and Sitka deer, but for Whitetails, the 4 foot rule seems to apply pretty universally. Cut a stick to a foot over your belt, and when you find a drop of blood put the stick next to it, and then walk forward in the direction the TRACKS tell you the deer is going, and let the stick lay down toward the ground as you stoop down to take a good look around the end of the stick. Usually, within 6 inches one way or another, you will find some blood evidence. It may be a pin hole size drop, but it will be there.
The other thing they don't teach you about blood trailing is that blood does floresce. If you are trailing at night time, a black light, or a flashlight with a blue lens will make the blood " Pop out " from the forest and grass floors, making it much easier to track down a wounded deer at night. Wearing orange or red tinted glasses will help you see the blood quicker, too. The blood does floresce better when its wet, rather than dry, but even dried blood shows up some.
My suggestion is to save some chicken blood, or blood from any meat that you eat---- just pour it into a container you can cap and can be thrown away or cleaned to reuse---- and test out your equipment in your back yard, to see what works, and how it will look to you.
