A few more comments . . .
Just checking the NADA value of the boat, it is in the $48-50K range, so one would assume that the estimate to fix it is less than that. (seems like it would be a close call)
The foam chambers may have some water in them (or they may not if sealed well during the hull construction), but the boat being new, the foam would be in good shape and not likely to absorb the water. As to how any water in the foam chambers would be removed, that is an interesting question :noidea:
The fact that the boat should not have completely sunk is a question to address with the manufacturer, as maybe it would be best if they have a look at it, and possibly they 're-manufacture' it.