Wondering if anyone could offer a touch of advice on my sleeping arrangements. I have a poly fill sleeping bag from Walmart, it's rated down to like 50 degrees fahrenheit. I also have a heavy duty tarp that I've been wrapping me and the sleeping bag up in the last few nights since it's been dipping below 32 here in memphis. Could anyone kindly offer some advice on how to keep the condensation off me and the sleeping bag? Would a smaller tarp over the whole thing kinda tented stop this? I can Google it I guess but I'd be interested in learning what works for others.