I would first drive the truck with the standard axles and the LSD - which will help. I very rarely use the lockers on the mog and when I do you could most certainly get by without them. With such a heavy (probably top heavy) vehicle you are not going to be climbing rocks and driving on real nasty trails so the only thing you really have to contend with is mud and snow. In these situations its debateable whether or not lockers help. My mog is more squirmy in snow with the lockers on that when they are off. On trucks this size the first thing it to make sure the front wheels are directly driven either by a tcase or a locking center diff in the case of a perm 4x4.
Using the brakes is a definate option but you really need to understand the system on your truck and the situations you'll be in, it might get old quick when you need to use it. One of the most useful techniques for driving a Hummer H1 is knowing when to use the brakes. Sides effects of the torsion diff can leave a H1 stranded, for example diagonal wheels off the ground. The torsion diff can only multiply the torque going to the lowest power wheel on the axle - 5x (for example) the torque required to spin an airbone wheel is not enough to move the truck. Gently holding the brakes gives 5x times the brake force to the other wheel which is enough to overcome the brakes and move the truck. Even with a torsion diff it can take a huge amount of brake effort to force the other wheel to go around.
You don't inherit the world from your parents, you borrow it from your children.
1979 Unimog 416 Expedition Camper
1974 Unimog 421
2004 Dodge Ram 2500, 4x4, Double Cab, Cummins Turbo Diesel
2006 25' Airstream International CCD
2009 Harley Davidson
Sugarloaf, Boulder, CO