[PositiveWaves]

I am pretty sure it is coming from the seam around the outer edge which I have had caulked a few times over the years. It never seems to work. Water still comes in.
 I think Tiara must expect this as they put two drains in. The question for me is do I set up a drain to the grey water box or just leave the water  in there.

Would advise against leaving water in there, for two reasons:
1) core inside is exposed and will probably rot.
2) All that extra weight in back makes boat slow and handle badly.

I found about 30 gallons inside my platform on haul-out and have the yard working on finding out how it got in.  The caulk around the transom does not seem to be leaking, but some of the screws for the rubrail are loose and they may be the culprits.