On our 2004 Marquis, the Aquahot exhaust ends exactly under the water bay door, streetside and fore of the dual axle. Our generator is on a front slide and its exhaust ends under the electrical bay door, streetside and fore of the steering axle. The only problem has been when parking in close proximity, our streetside neighbors get both exhaust streams. If needed, we have a Gen-Turi to attach to the generator exhaust pipe to re-direct its exhaust either forward or vertical.
Note that when the generator is on a slide, then its exhaust can be fixed only to the slide such that it can move with the slide.