I agree with Micro.. that said, I don't have a hook on mine /forums/images/graemlins/frown.gif
Depending on what I'm doing.... no in fact MOST of the time, I'll take my chain and either wrap it through the bucket teeth so that I can use the bucket cylinder to help raise/lower, or I'll wrap it around the bucket. Usually, it's through the teeth. This way (like your pic) in what appears to be a pulling situation, the overall forces are on the leading edge of bucket.
I've hooked onto that piece you show in your pic a couple of times and I can't get rid of MY fear/feeling that I'm risking bending it.
My thought is, by utilizing the bucket itself, I'm spreading the load out to the bucket attachment points, rather than possibly just that one piece.
I also like that by wrapping in/through the teeth, when I'm done I can just wiggle the bucket back/forth and remove the chain from the bucket without having to dismount machine.