When the deer is not found, is that it for the hunters hunt? I know a lot of places have an "if you draw blood" policy.
The deer I shot on Sat with a rage had very little blood trail because he was bleeding internal from a double lung pass through. I did not have to worry about a blood trail though because I saw him drop within sight. That was fourth deer shot with a rage hyperdermic and never had to track. My buddy shot this one yesterday with a rage. No tracking needed.