After cutting off the remaining hook, I made a drill jig on the table saw to mark out the four holes needed to "staple" the handles to the bag.
Insert the staples and pound them in with a mallet.
Now I can carry the bags into the store. Something that was not possible before.
On the bike.
From above.
Also at the hardware store were these stainless rings. I attached them through the grommets with a length of stainless steel cable running behind the flap. These can be used to secure the bags with a locking cable attached to my U-lock and I can also attach a shoulder strap.
The bags might be done.