I am interested in the different ways of sealing the keel box slots. I have heard about automatic arrangements which allow the original blocks to rise and fall – but I have never really understood how they work.
Calista has had rubber sealing strips since I have had her – and they have had to be replaced at regular intervals. However I suppose replacing them 3 times in 20 years is not too bad – it is just that I hate doing the same job again – and again.
I would have thought the standard original arrangement would work for you. What exactly are the problems that others have had with these?
On the other hand if the Marglass is really clean you might get away with bonding rubber strips on to the hull using something like sikaflex. Holding them in the correct position while the “glue” sets might be tricky – and there is always the risk that the glue line might fail.