Anyone ever use a plastic bucket as a mash tun?

I ended up spending more $ and time building a 10 gallon mash tun from a cooler than I wanted to. So I returned everything and bought an 8 gallon mash tun from my LHBS.

It's basically just a brewcraft bucket with a false bottom and spigot etc.

They say they use it all the time when they brew at the store (though they use keggles personally) and it works great. Doesn't really lose much heat.

So anyone ever use one? Think it will retain heat okay?

Just put it in a sleeping bag. It will be fine.

My first AG batch was done with a similar setup. I would do as hal2814 suggests and wrap it in something to insulate it and it will probably work fine.

Thinking about wrapping it in some reflectix insulation from HD.