RE: Wounded the biggest 8 Pointer in my life!!
I agree that you have expended every effort and have nothing to hang your head in shame for.
I don't like the "quartering to shot" for just this reason. If you can hit tight to the shoulder odds are good to take part of a lung, liver, and the arrow will angle into the gut. This makes tracking difficult because intestinal material will fill the hole allowing for a drop or two of blood every five or six feet; allow 4 hours before tracking this animal.
If the shot is not tight to the front shoulder, a gut shot will be the result; I allow overnight or 10 to 12 hours to track a gut shot.
Dick