I would say singles would do better than doubles. Where there's snow, they'll be ice. I have no experience with M35 size trucks, but Dually pickups are less than ideal on ice. I'd think you'd be too heavy to stay onto of the snow anyways (which is where I'd think having dual wheels would be a benefit, after you've sunk in you've just got wider things to drag through the snow). My stock M1009 on 10.5X33's does pretty well in the snow(if it's not too deep), but I'd have to agree with
NSCoyote - the snow builds up against the solid front axle. You might want to make some sort of skid plate that pushes snow under the front axle so that the truck forces snow under it, like a toboggan, instead of pushing it. In that aspect, my buddy's '97 1500 actually did better than my truck in the front for going "over" snow instead of "pushing" snow, since the IFS system under his truck has a downward angled skid plate instead of a flat surface like my solid axle. In the pic we were going through snow like you describe, hard crust a few inches thick on top with loose powder underneath. This stuff was hard enough that you could walk on it (if you jumped you'd go through). In the pic, the vehicle that was doing best was probably the jeep, because it only weighs like 3000 LBs and was more or less sitting "on" or just slightly going through the snow. That jeep has a towing capacity of like 2000 LBs and is so light that several large running starts with a long recovery strap followed by whiplash for all involved was required to rescue even tiny cars that had skidded off the road.. I would not recommend them as a recovery vehicle. The M1009 was able to drag it out of just about anything in 4LO with very little throttle.. I love my truck. My buddy's 1500 was doing fairly well, again likely due to it being lighter at around 4000 LBs. My M1009 was carrying a full payload of passengers and a bunch of other junk, so it can clearly be seen to have broken through the crust and sunk into the snow. She isn't stuck, but she is pushing snow around. Slow going, and every once in a while I'd back-up and change directions, leaving behind a big mound of snow that was starting to get onto my hood. Some sort of plow at about bumper height that took the snow to the sides would have helped a lot. Higher mounted headlights also. And block off your grill with something to protect the grill/rad (if you have a "little" truck like me).
Driving on ice with a rear locker/lim-slip (standard equip on the M1009) took some getting used to, but now that I'm used to it I love it. When you feel or hear one tire starting to slip LET OFF THE GAS because as soon as the difference in speeds of the 2 tires reaches a threshold, the other tire is going to clunk into locked mode and you're going to lose rear end traction.. which is manageable at speeds under 45 MPH unless you happen to be going around a bend.. In theory, the locker is not supposed to come on over a certain speed. In practice.. It can do strange things. Practice makes perfect. Also, tires that are "winter rated" (have the snowflake mountain symbol) help a ton. My BFG TA/KO's are 10 times better than the old BAJA's my truck came with on ice. You might want something with deep tread to help you get that big truck moving in the snow. My truck is 95% road driven daily driver. Nice to be able to help folks out when I need to though.