If MT's would've helped me here, I concede.

In fairness, this is a frozen lake underneath. Not even gravel/dirt or some other compound that could provide some grip when you dig down to it. Once you hit the lake ice, you're shoveling.
I've been happy with my 295 A/T's, but can't really comment on the mud/rock crawling aspect. Mine see more snow and ice and highway than anything.(Which really sucks now that I think about it

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Have had good luck in the snow. On ice the hard compound is a drawback I'd say. Wearing has been excellent so far. Noise not an issue at all. So far 40,000 and counting. Lots of tread left for my uses. If I was playing in the mud, maybe less excited about them.
After all that though, I think I'll try a set of M/T's next. Probably in a 315 just to see what the fuss is all about. Maybe sipe them. If they suck, there's always Mudbay.
A little extra clearance can't hurt. We're flat here so if I lose some power, it won't kill me. It'll travel 80 mph all day long if I want it to. Gas mileage stays the same no matter how slow or fast it goes. Listen to the experts here before me. I tend to just get in and drive, oblivious to the details. Good luck!
edit: And yes, these are the same pics I've probably posted 10 times already in different threads. I'm married with 4 kids so I tend to replay my fun times over and over.....It's all I gots.