My 9 year old has already told me I can't sell this one.
Some more progress today. Helm out, cabin walls out, interior panelling off, roof off, about half of the carpeting out, and the bow deck piece is out. When I took the dash out, I discovered there had been an electrical fire on board the boat at some point. The wood was badly burned around some electrical wiring.
There is nice DRY polystyrene flotation foam at the front - so nice it could be reused. I also found what looks like a piece of clingwrap there. It's clear that someone did a partial refit of the boat at some point, but they never tore it apart.
Couple of interesting finds as I went. There is this resinous material at the front - seems to serve the same purpose as Gluvit. Anyone know if this would be original to the boat?
And as for the "seal it up or leave it unfinished" debate about plywood decking - the bottom of these side panels have seen a lot of water over the years from the stains on them - but they have been finished with some sort of varnish - still solid. The unfinished wood was falling to bits, particularly where the exterior deck met the cabin.