Checking for Moisture

[JohnB]

Roland,
About the only non-invasive method I know is to use an electronic moisture meter. They work very well, but if you have bottom paint on the hull, you will have to remove some paint for the meter to work correctly (most bottom paints have copper in them). You can check for water in the stringers or transom by running the meter along the outside of the hull. It will detect moisture thru the glass.