The way they want to do it is do grind away a gap around the keel/hull connection line all around on the outside and refill that with Sikaflex. They say Sikaflex flexes a little bit and seals it well, and that’s what is used on modern boats these days for that purpose.
On the inside, they want to sand down a lot of the material all around what they call « the box », apparently the structural element taking up the keel from below. For that they actually need to cut through the built in portside ‘furniture’ hull element, because that is partly covering the box. They would then redo that with a lot of fibreglass to strengthen it, which would actually make it come up a few centimeters higher, so there would be no more space/need for the plywood cover. The bolts would be housed in little cavities that are then closed up with silicon. It would then all be finished up and painted properly.
It actually sounds like it would be really well done and could look pretty nice. They want 2.000 EUR for that, plus/minus. 😅
Factoring that into the buying price will be a tough sell…
Anyways, I’ll keep you posted!