A lot of times people will put plywood up there and throw boxes etc for extra storage. When I spec a building and they plan to lift things like small engines they will sandwich 2 trusses together. 200 lbs is of no concern. Now its seems like humane nature to always want more. When you start adding more and you end up point loading 1000lbs or so you may want to rethink that. It would be easy to sister some framing and build up a truss or 2. If your 200lbs was of any concern we would see garages caving in all over the place.
