What would be the normal moisture level of B/W GRP hull of Hunter 36? The boat is out of water for winter storage. I am using "Skipper Non-Destructive Moisture Detector/Marine Moisture Meter", Item Number: M253S, manufactured by Tramex (Ireland). I was digging in various sources and so far couldn't get any respond. The meter scale span is 0-100% of Relative Humidity. The span is equally and proportionally divided to 3 coloured sectors: green, yellow and red. Has any one experienced in this kind of survey? Tanks, Michael