Total cost, a cup of tea and water! A friend of mine gave me an almost full tin of antifoul paint and another friend helped me clean the hull and apply the paint. I used the clubs scrubbing dock and after a hard days work in the sun Louisa now has a Vision-On style hull.
We finished the antifoul off with the dregs of an old tin I had. It would have cost more if I had more than one tea bag!
Also managed to fit the self steering and change over the anchor chain + some other minor jobs. The self steering is a Mk 2 Sea Feather and despite not having any instructions it went together reasonably easily.
Hopefully the lock down will be over soon and I can go sailing properly.