You even say" you don't see why once professionally repaired it wouldn't hold up for many more years" that means you have doubt about how long it will last.
I'm not a native speaker so maybe I wasn't being clear enough.
A proper repair job could make it stronger then it ever was before.
According to my math the boat is one year old: 2010-2009=1.
I guess this means we are not talking about a new boat here but a used one.