Hey gas mask have you been under there and seen just how accesible the bolts are, let alone the threads? After getting the bolts out the penetrating oil seems to have gotten half way up the threads but the worst part was further up. The breaker bar, Pipe over the socket handle' worked great. I still ned to know what tool works for that 3rd bolt on the passenger side tow hook the farthest up.
I haven't really looked, but I did pull a rear bumper off a 1st gen Trooper at Pick & Pull and those 4 bolts were a WHORE to get off. They are accessible but only with a smaller ratchet and there isn't much room to crank. So why are you removing the hooks?