I'd say pre 2004 are at highest risk. 2016 and up the lowest. In the middle, gotta pay attention to coring in bigger beams, wood on decks and hatches, transom and stringers.
First check if salt or freshwater and see how the water is getting in.
I'd consider putting in drain holes in the specific area. Will need to glass and I'd gel coat as an added measure. Best to do on the hard when dry.
I noticed on some hulls there is not a recessed area for the tabs and others where the tabs extend out beyond the transom. Both conditions are not optimal in my book and I wonder why GW does it this way. First thing I'd do is talk to the yard that is moving the boat around. Maybe contact...