After a little tidying up you can see the impression of the old wood left in the resin of the original shell of the hull.

Lots more cleaning up to do with grinder and chisel but the worst part is out. Is it just me, or does it look like there is a section in the centre where the hull may never have been fully bonded to the wood of the transom? Its like a huge irregularly shaped void.

Packed things up for the day again.