If I'm seeing the pictures of the inside of the boat correctly, the repair was made just below the gunwhale. You'd be surprised how many times racing boats get into collisions with other boats going around the course; just ask the insurance company. I would think that there is no structural integrity with the repair...it's above the waterline anyway and not near the chainplates. I would have no problem buying the boat pending the surveying confirming what I think and getting an honest reply from the owner. A good surveyor will also have a good feel for the present market and what you should pay.