I think
I've seen one in the NE on the road, but it did not look stock, looked like an idiot who wanted as much hp as possible....had 2 200's on it!!!! Barely fit in the engine well. After passing him and reading some bumper stickers on his truck I could clearly tell this guy wasn;t too smart.
I do not think many sold because most seafarer's are just find with single power, the added cost to buy and then run the boat is not warranted for typical user's. I know just how well the boat run's with a single, going twin's would make that a quick boat, just not sure the extra cost to maintain and operate would be worth it. Most guys who go to twins want 1 of 2 things, more speed, or safety when going offshore. Even with the aux fuel, the 22 is not exactly a long distance runner, it might have the range if you wanted to really push it, but the boat is small for offshore fishing, not worth the risk on most days so there was little market for twins and the option did not last long.