I do a lot of hand binding, but I can't give you a time estimate. It varies for me, depending a lot on the fabric. Some needles much quicker than others. To help keep my fingers fresh, I usually do no more than one side of a quilt while watching TV in the evening.
I think that the goal with hand binding (and any binding) is to have it secure and neat. You can see my stitches when you look close, but they are small and only show on the binding fabric. A good thread color match helps.