Arrow, The reason I know it's hollowed out is on the starboard side at the turn of the bilge there is a section / plank missing. It's about 4 feet long. I stuck my hand in and the hull at that point is about 2 1/2" to 3" thick, the bottom plank is also about 3" thick. I'm guessing 600# because three of us slid it off a bunk trailer with a little resistance, Two of us couldn't move it alone.
And yes Arrow, the tape measure is showing the thickness of the deck, perhaps it is thicker, but we won't know till the deck is removed.
I'm contemplating cutting a hole in the deck this Sunday the 28th, so I could get some decent photos for view. I can safely cut a hole where the hatch cover should go, since there is one missing on the fore'deck.
Off course who knows what the weather will be on Sunday, this past Sunday I was headed down to the Garage, to eat, drink and watch the New England Patriots play the Arizona Cardinals AND admire my boat, but the snow storm was a little too much to risk the 16 mile trip.