Loaded and over-loaded vehicles are serious business. Operating with bad weight distribution or excess weight is irresponsible. You may get away with it until something goes wrong. Something unexpected, like a distracted driver suddenly in your path. I have been lucky in that the 2 times I needed to panic stop my '95 E-150 while towing my un-braked boat trailer, there was room to stop. But I realized I was way over my GVWR of 7000 lbs. and needed more braking power. My past employer is dealing with the grief of killing a driver he T-boned while towing a skid-steer with an SUV and no functioning trailer brakes. A friend of mine is dead after swerving his loaded 18 wheel tanker to avoid a deadly crash with a PT cruiser. In both cases, it was the other driver who failed to yield to a vehicle which had the right of way. Be careful, no mater what you haul.