NEW: Following member feedback, we now have a Mooring & Marina Review forum. Post your review here.
The way i looked at it was that at below 4mm the boat becomes uninsurable and with 1mm gone it was half way there.With the boat costing nearly 60k i felt it should be in a lot better condition than that.This was also the thought of the surveyor.
Good luck with the survey, We have just had a survey done on a 2005 58 ft trad, it came back with a lot of pitting and rust on the hull.The pitting on the sides was nearly 1mm deep and after looking at all the options of sand blasting and 2 coat epoxy we decided after a lot of thought to walk away. I think the important thing is not to let your heart rule over your head. There are plenty more boats out there.