We had thought of that, but decided that a fire under the tub would be too hard to control the temperature. We Californian’s are a finicky bunch about our hot tub temps.
Also, a pump can produce more powerful jets and bubbles, and we Californian’s just love the feel of bubbles up our assets and want the rest of the country to experience this sensation. It’s kind of like when people blow smoke up your asset, but more intoxicating.
Besides, the eccentric will provide a surfer’s experience and who knows what else I may come up with.
Finally, the “horse in the hamster wheel wheel” will be a novel approach, and we know know many horsepower we are getting out of it. But Donkey has been asking me about filling in on occasion.