Baaagh... Pull away. As long as the truck being pulled isnt stuck.
I have pulled on motor homes with trailers attached and a jeep riding on the trailer. Pulled those piles of **** all over the lake bed.
What's the worst that could happen?
Does the truck you are pulling run and have power to the wheels?
If so.... I wouldn't think twice about hooking up to it.
Even if it inst running, I'd pull on it, but i guess that is just me.
At KOH last year i was trying to no avail to snatch a full size flat bed truck from the sand. I was yanking the HELL out of that thing. Didn't get it out, but it wasn't for lack of trying