We have an iron hulled boat with a wooden top (40' but roof 26'). It was originally covered with a fibreglass skin which was punctured in lots of places. I replaced the walls but patched the roof which wasn't in as bad condition. The roof has gradually deteriorated though and it is time to do something more drastic. I don't want to take the entire top off but really need to get the roof replaced so we're looking for suggestions of either techniques or somewhere where we may be able to get this done at not unreasonable cost. We're moored at Milton Keynes at the moment. Any suggestions gratefully received