I have a question about looking at or surveying boats in the winter. We want to look at a boat in frozen northern Ohio. One of my concerns about an older boat is the possibility of a wet core. Is it possible to spot a wet core in the winter? It seems like a frozen wet core would appear to be solid. So the question is can I make a fair assessment of a boat in the winter and if we like the boat, can a professional do a quality survey in the winter?