there's always a limit. Go to
www.fourwinns.com and you can get the list price for the boat you looked at. Depending on popularity, dealership, season, etc, you should be able to get 10% to 30% off the list. I know that's a big range but it's hard to get any closer. Right now the dealers smell spring and that means buyers and that means higher prices. A 20' boat is a popular first boat and the dealer is not worried about gettting stuck with it.
You can and should ask about discounts on accessories, and future service to help the bottom line. Some will, some won't, it doesn't hurt to ask.
You may want to glance through this thread. He spent some time looking at similiar boats.
http://www.winnipesaukee.com/forums/...22444#poststop
BTW I bought a new boat last fall and paid pretty close to the dealer's first price. But it was a left-over so the dealer had already put in a big discount.