There's a bit of differecne between the traction and braking ability when you have 11,000 lbs over the axle, and when it is pushing you down a hill. Those big buggers had more baking capacity on the rear end than the front & without a load over the axle you're more likely to lock them up with a heavy towed load.
Besides all that, isn't there a requirement for brakes on larger trailers in NY? I know there is here. With proper trailer brakes it's less of an issue.
1956 GMC 370 dump " 'Tater "1970 VW Volksrod "the Black Bomber"
2007 Chevy Avalanche
2020 Jeep Cherokee Trailhawk,
2005 Harley Davidson FLHTCUI
I dig all cars, old and new, whether they were hammered out of American iron, German steel, or Japanese tin cans. Being unable to appreciate them all is missing out on a world of great things.
But thats just MY opinion! :P