Widespread inflation inflates the price of boats just as it does cars and other durable goods not new. Possession of hard assets is often touted as an inflation hedge; so, I would not count on inflation being helpful on the purchase price. Although an owner might tire of the increasing costs to keep and maintain a boat and become motivated to sell, it likely will be at the “inflated price”, etc.
Recognize that yachts are largely in a nationwide market place. Folks search widely across the U.S. for a boat, travel from their local area to inspect, and then ship them to home location. If you want a yacht now, or soon, search along the west coast, be prepared to travel, and be prepared to buy on a relatively short time line. Not like the “old days” of only a few years ago. If you want it, pay the asking price if you can. Enjoy the boat for a few years then maybe “return the favor” to another buyer down the road. Just don’t get stuck with a major fixer-upper; get one you can sail now!! With enough fun in the wake you’ll not remember or care for long how much you think you might have “overpaid.” It seems you know that already.