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We wet tested the optima first and the jets almost flayed the skin off of my wife's back. Within 3 minutes our backs were numb. ... My wife sat in the center of the tub trying to escape the "therapy". The sundance dealer spent a good 10 minutes bashing the moto massage and telling us what to look for that was lacking like... having to turn slightly from side to side to get a fuller back massage. 3) The "move left and right" is a non-issue. We did it on the optima to try and more evenly distribute the pain. We did it on the grandee to better distribute the massage.
I do not understand these comments on the Optima being overpowered. I own one and every seat and every jet have endless adjustments for water control/pressure. The jets themselves can be dialed up or down by turning the rings, some jets can have direction changed, diverters can turn seats on, off or adjust it anywhere inbetween. I've never left my tub with red, itchy skin or numbness or skin flayed off.