I am looking for a hot tub to replace a very old fiberglass tub at our vacation cabin in Colorado. We have 140 degree hot water coming from our well and we generally fill up our hot tub with a hose early in the day, let it cool off, then drain it after we’ve used it. We want a tub that is around 6 ft square or round with a simple bench and a drain on the bottom. We don’t need jets, a heater, lights or insulation as we drain the tub after each use. We want to be able to use the hot tub throughout the year, but there are months at a time that it would be empty. The tub would be installed flush with the floor of a deck on a slope with the bottom of the hot tub resting on the ground. Does such a hot tub exist? I've looked into wood tubs but I'm concerned they won't do well in a dry climate where the tub will be empty for long periods of time.