The bottom paint makes it worth a lot less in my opinion - because that means it probably sat in the water at the marina and not on the trailer in the garage.
I don't agree with bottom paint always meaning that the boat was in the water. I bottom paint all of my boats because in Florida
growth will occur in a week, yet the only time the boat is in the water on trips--which may be up to a month in length. I am more concerned with corrosion in an outboard than with actually the hull being in the water. As long as the engine is flushed regularly with fresh water and kept out of the salt in the interim, there is rarely an issue.
A Birch Bay boat, probably Pat Anderson would recognize this boat and know how much time it was in the water.