I don't know what the hell anyone would want tow hooks for.
I have shackle mounts front and rear. Before that, i'd use my reciever hitch, frame, or leaf springs.
Only time I've ever yanked on someone's tow hook it was K5DRAGER and it's all bent up (I damn near broke it) to this day. Hooks are not safe, and far from ideal for towing in my opinion, and downright scary at times.
I've had nothing but good luck with my 3' length of grade 70 chain that I've used to hook to whatever happens to be sticking out of the ground at any given time that is sturdy, which means frame, leaf springs, reciever hitch, etc.