What Lies Beneath?

I've been looking at my W. Robusta, wrapped in blankets and plastic (and heating cables) and despite the efforts, all I see is dead fronds. When I peel back the plastic, I smell dry, dead leaves. I'm not sure if I'll have anything left of my Mexican Fan Palm by the time this winter is through with us. It got down to 9 degrees in my backyard, which is certainly cold enough to kill the palm. Sans winter protection, that is. The question that won't be answered until March 15th when I unwrap the palm is whether or not this protection was sufficient. I guess I need to enjoy the winter and know that time will tell....