Took an angle grinder and drill to the hull today, carved out the damaged areas and found a nice piece of previous owner repair work  :mad: looks like instead of repairing a crack a previous owner simply blobbed araldite along the crack, for all araldite is pretty good gear it doesn't repair boats too well, the glass immediately around the 'repair' had a mild case of osmosis so that got cut out aswell and I'm intending on repairing it properly.
Slightly scary yet satisfying to take an angle grinder to the boats hull  :ash22: