Greg,
Yeah, travel is your enemy in pulling. I know all about it. I co drive a class 8 truck in the desert - your best bet is not to strap it down, because it will still squat it. Find a way to get something in where your bump stop is that is solid and takes up the space - maintaining minimum of 2". I made an adjustable stop that goes in place of the factory rubber bump stop, it can be adjusted from about 4" to 0" of travel. f you can come up with something you are better off. If not, just let her rip how it is.
Craig