Thank you for replying. A fellow coventrian? Nice to meet you! It's a bit complicated as we had a survey done on another boat ( built 1983) but it came back with 'done if the worse corrosion I've ever seen'. We were offered by the owner to have a whole bottom replating at his expense but thought as it was an older boat and did not have enough going for it, we walked away but on the same day, the broker from a boat we had put an offer on a month ago ( it was refused straight away) phoned to day the owner was considering accepting the offer after stewing on it. The owner had spent a lot if money on it and addressed all minor issues that arose from the last survey and was reluctant to let it go for less than the asking price. We have access to the two year old survey and it says there are no problems with bottom plate 8.4 to 9.5 thickness but the sides were ( from two original plates of 6.5 and 6,0) 6.4 to 5.8 which isn't itself a Problem. He went on to say there was a fair bit of pitting with majority depth of 1.3mm with a few deeper pits of 3mm. he said there was no cause for concern providing the area is kept well blacked. We were reluctant to have a survey as the old one is 2 years old, showed nothing put of the ordinary and issues had been dealt with. Also it would be our second survey and cost would be an issue. Do you think were being unwise?