In reply to Alex@home:
You could larks foot a short sling into it if you're not sure the knot won't pull through
Also you lose very little by simply threading the hole and tying to form a loop, at least that way the wear isn't concentrated on one part of the sling and you can't accidentally separate/drop the hook or sling while handling it. However you sling it it's still a hook, the sling isn't the sketchy bit
jk