I do better when i don't read the chapter to the agnostic unless it is a meeting that is reading the big book..and then i just share honestly after my turn reading.
I say something meaning ful to me during the lords prayer part.
I focus as much as I can on what my higher powers are (cause and effect and other non-human type things) and try to avoid spending time thinking about god that i don't beleive in....It's good to look at it ocationally, but no point beating what for me is definately a dead horse.