Guys,
FYI, I have to agree that some conditions are not going to be passable, plowable, driveable, regardless of set-up or machine. For example, we got an ice and snow storm last night, and although I left my 3320 parked, I was in my 3 yard wheel loader and it didn't fair too well on FLAT ground under these conditions. Keep in mind, this is 4 wheel drive, and weighs in at about 30K LBS. The freezing rain, and dropping temps played havoc with this machine and all of my others.
I agree that chains will alleviate the problem, almost certainly on a gravel base.
Also, having been forced to trade a newer machine in the past, I cringe whenever I hear someone mentioning that option. Usually, the dealer is the only winner, and even if you sell to a private party, you will have taken the initial LARGE depreciation hit from when the machine was new. JMO.