To go a bit further than Tony, the surveyors job is to find faults to help you negotiate a price reduction, and to some extent to justify his own cost. He will also be advising what should be done in an ideal world rather than what is required to keep the boat floating for the next ten years.
And to repeat what I said earlier, Shoeing is a localised repair/improvement to "strengthen" a high wear area and is not the same as full on overplating. Also welding to a bit of good but worn steel is a whole lot more satisfactory than welding over a pile of rust.