I'd add extra weight to the truck bed if you can. I make sure my 100+ gallon fuel tank in the back of my truck is full when hauling the enclosed snowmachine trailer during the winter. It's usually not the driving on the road part that's a problem, it's the sometimes finding a place to park that hasn't been plowed yet, or it snows heavily after you've parked.
Bill
Nodwell RN110 out moose hunting. 4-53 Detroit, Clark 5 spd, 40" wide tracks, 10:00x20 tires, 16,000# capacity, 22,000# weight. You know the mud is getting deep when it's coming in the doors.