The bast advice I can give is that you NEED to buy your own moisture meter AND learn how to use one correctly..
Holland Marine Products
out of Canada sells this moisture meter:
Trust me it will pay for itself the FIRST time you use it. Getting a surveyor out to a boat will cost you a minimum of about $400.00 $600.00 to tell you the thing has decks like sponges that you can;t feel.
With your own moisture meter, and some studying, about proper use, you can eliminate ten boats a day until you find one with dry decks, that you like, and are then willing to commit to a survey on..
Click on the words Holland Marine Products above then scroll down the main page a bit to see the moisture meter..
You can be penny wise and not buy one but TRUST me it will pay for itself during the first use if used properly. I think every boat buyer looking at 30+ foot boats should own one and take the time to learn how to properly use one. Don Casey's book on surveying is also a MUST..
My personal feeling is that if every boat buyer had a moisture meter brokers would smarten up and be a LOT more honest!!! Many brokers have moisture meters and do check decks before listing a boat but then WON'T admit any problems and force you to hire a surveyor $$$$ to find out for yourself.. It's like they are in coo hoots together..
The savvy boat purchaser always comes prepared and owning a moisture meter is the number one thing you can do other than reading and studying books on boat surveying and construction ...
The Pearson 36 is a great boat but not immune to the perils of age..
You did forget one thing though; electrical and wiring (condition, gauge, corrosion, terminations etc.)