Listen to SD. A sloppy paint job is a bad sign. I'd much rather see a weathered surface than one that someone decided to throw some paint on.
I'd be surprised if you only need to touch up the bottom paint. Depending on what kind it is, its antifouling properties may not be gone.
2000 Beneteau 331
Northern Chesapeake Bay
Ambition is a poor excuse for not having enough sense to be lazy ~ Steven Wright