The only trick I know of on a bad hit deer where there are yotes it to use them to your favor. I learned this the hard way. My first year in KS, my PL who never hunted in his life hits a big KS white tail in the wrong end. Start trailing it that after noon. I trail until dark and it is on agian off again trail. At dark I pull out not wanting to bump it in the dark if it is still able to move. As we reach the truck I hear yotes all excited and almost made me go to them, but I decided we had enough and we left and came back the next afternoon I found the deer about 4hrs later not 150yrd where we stopped, and we were with 100yrs or less of where it bedded. The yotes jumped it forms it bed, and ran it about 100yrd and eat form the ribs back. This was the biggest deer I have ever put my hands on. I should have went with my instict and followed the sound of yotes. we would have found that deer that night. Lesson learned.