Both boats a Direct Drive both 21.6, Both boat had a stock balast of 400-500 lbs cant be exact on the weight. The Pro Air, had a diffrent hull than the Air, The Pro Air had a hull that would make the boat ride taller in the bow. I was told a 5 degree rise over the air, I was told that this 5 degree rise was to simulate a extra 500 lbs of balast, Im not sure how long they made the Pro Air for. But if you look under the hull of a Pro you will see what look like wings molded into the hull, Where the Air was some what smooth. Im sure more people can help explain I was also told that the pro Air worked well with stock balast but if you wanted to weigh it down the Air nautique had a better hull for a weight
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