No offense, but if you're buying
, seems to me the best deal is the most boat for the least money
. It's not your responsibility to overpay because the seller either :1. overpaid himself, or 2. let the boat's condition slip to where the market value falls substantially below what it otherwise would have been.
It's also not your fault the mortgage market tanked, and that has similarly caused a depression in the boat market. You are the buyer, you can pay whatever you want to pay, just don't forget the costs in correcting all the problems an otherwise nice boat might have, as well as the outfitting costs involved in getting her ready for the round a bout.
Now, if you're selling...well today is not a good day, UNLESS, you are selling to the wealthy who seem not to mind nor even notice the periodic swings in the markets.
And, in any event, you don't have to sell just because someone offers.
Lastly, the best business advice I ever heard was this:
"In business you almost never get what you deserve, you get only what you can negotiate."