If you have a dog put him on leash and try walking him out there with you he may just smell something you can't see but you must keep it on a LEASH. Crows are a excellent way to locate a dead deer also. I am sure you have learned a valuable lesson from this though. The best buck I ever got took me about 8 hours to find but that was because I hit him to far back. I walked around 7 miles to find him back and forth through the timber. But I stayed at it till I found him. Good luck and don't give up yet. You owe it to him.