I can understand your angst, and I second JTAlberts reply: if I had known of the pitting on my boat before I bought it, I probably would of walked away. Honestly, though, I think it would be difficult to find any Kingscraft without some pitting - these boat are getting pretty old and have probably encountered galvanic corrosion at some point in their lifetime.
I'm not too worried about my hull though. I figure if it starts leaking, it will be pretty minor and I'll just fix it - as I've been fixing everything else on this blessed thing...;-)
I am in the same mindset. If I start getting issues with my hull leaking, I will get it repaired.