I have a 23 CC and I see no reason why to raise the floors on the 23’s but with twins I would want to re direct the scuppers to out the back of the transom instead of through the deck to the bottom of the hull. If that is the original transom than that would need to be redone and for the cracks in the deck if there are a lot and water has been permitted to get in the lamination that balsa wood will decay and need to be replaced as well. Most cracks are the visible sign that the lamination has already decayed.
FellowShip
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My motto: Just for the Grins
