Is Find() dependable or should I use something else?

I'm trying to use Doc.Find() to find paragraphs that have changebars. Is Find() advisable generally or should I spend my time using some other method, like iterating through Pgf objects?

I'm also assuming that the place to look for changebars is the Pgf objects (Pgf.ChangeBar), not the TextItem objects. Am I on the right track?

Thanks,

Mark