I started with a single grab hook welded in the center of the bucket on top. This worked great and as time went by I kept testing it. Well, I started clearing a lot with some good size oaks and in using the tractor as a skidder I bent the top of my bucket down about 3/8"; I had found it's limit. So I straightened the top (no easy chore) and then welded a d-ring inside the bucket to use for pulling. I have maxed that baby out a number of times. So I am a proponent of having both and having them welded. The d-ring is welded where the bucket has a support piece on the back.
Later, I wanted an easy on and off trailer hitch and found that d-ring to be very useful in that regard. The hitch is on or off in less than 30 seconds and does not move sideways at all.
View attachment 492407
Looks familiar.
Bolted through the cylinder mount reinforcement. And I have a large turnbuckle I use with a receiver on the edge, too. It is used mostly with a short boom pole, so it attaches to a chain near the tip of the pole.

Bruce