had a 2 hour soak tonight in 33 degree rain. less important what you buy, but just buy somthing to allow you to enjoy the winter outdoors. would be hard to explain to those that have never experienced it.
the tub has been great, although having difficulty keeping up the chlorine levels. When i follow the tub instructions, there is no chlorine in the morning when i test, so i'm tripling the instructions for diclor.
otherwise love the tub, my wife has been out of town since i took delivery, so it can only get better from here.