If you really want to mess with him, just go to the listing and use the "ask seller a question" feature and ask him if all the rot in the boat has been fixed. If he answers and forgets to hide it from the listing, it will be posted for all prospective buyers to see.

I asked him threw ebay and he told me I was right, it was the boat from Florida, he told me he fixed one stringer and that it needed more work, he just didnt have the time to do it. When your a seller on ebay you can choose if your anwsers to questions get posted or not. At least he was honest.