It''s quite a broad question you are asking with many variables and therefore just as many answers. I have quite a bit of experience on the topic (fortunately or unfortunately) and would gladly provide what feedback I can. How and by whom was the moisture detected- you, surveyor a shop? Was it measured with a meter and/or sounded and by who, again shop, yourself or surveyor? Is delamination, blistering already present? Was a core sample taken from the transom? Has the point(s) of water intrusion been identified? Is the aluminum transom cap which runs the length of the transom and which the motor brackets are resting on in tact (sealed firmly down) or can you see that it has started detaching or can you see that it was resealed by someone (assuming you are not original owner and do not know entire history of the boat)? If not, look inside the bilge with a strong flashlight and locate the motor mounting bolts - do you see brownish rusty stains (ice T) coming down from the bolts?
The boat is going on 14 yrs old, given some imperfections in transom design, age, etc. some level of moisture could be common by now and can be deemed as acceptable, so long as it is not excessive, progressive and the point(s) of intrusion has been identified and remedied.
