This is a 5-ton deep-throat shackle that I got from Lowes for $15 a while back. Lowes no longer carries them but Ace Hardware can get 'em. They're by Big Orange brand. I've used it in some fairly tough recoveries a couple of times so far and they've done just fine. One on each side with a 3" wide tree protector strap between them to center the pull is the way to go. There's still the issue of the bumper, but only if you're pulling from below the stuck person, and that hasn't been a problem for me. Seems it would be a problem any way you work it though. The exhaust is also a mild concern, but can be addressed.
Note that the shackle position in the picture is how it rests when unloaded due to the weight of the pin. It slides all the way to the rear and horizontal when you attach a strap and tug. The shackle bracket it is attached to is the point Nissan recommeds for vehicle recovery, and has proven itself up to the task so far. It is welded to the frame.
Brent